21013440

素因数分解:

$2^6\times 3^1\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1$

素因数の和:139

約数の個数: 224

約数和(自身を含む): 79004160

約数和(自身を除く): 57990720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 53, 56, 59, 60, 64, 70, 80, 84, 96, 105, 106, 112, 118, 120, 140, 159, 160, 168, 177, 192, 210, 212, 224, 236, 240, 265, 280, 295, 318, 320, 336, 354, 371, 413, 420, 424, 448, 472, 480, 530, 560, 590, 636, 672, 708, 742, 795, 826, 840, 848, 885, 944, 960, 1060, 1113, 1120, 1180, 1239, 1272, 1344, 1416, 1484, 1590, 1652, 1680, 1696, 1770, 1855, 1888, 2065, 2120, 2226, 2240, 2360, 2478, 2544, 2832, 2968, 3127, 3180, 3304, 3360, 3392, 3540, 3710, 3776, 4130, 4240, 4452, 4720, 4956, 5088, 5565, 5664, 5936, 6195, 6254, 6360, 6608, 6720, 7080, 7420, 8260, 8480, 8904, 9381, 9440, 9912, 10176, 11130, 11328, 11872, 12390, 12508, 12720, 13216, 14160, 14840, 15635, 16520, 16960, 17808, 18762, 18880, 19824, 21889, 22260, 23744, 24780, 25016, 25440, 26432, 28320, 29680, 31270, 33040, 35616, 37524, 39648, 43778, 44520, 46905, 49560, 50032, 50880, 56640, 59360, 62540, 65667, 66080, 71232, 75048, 79296, 87556, 89040, 93810, 99120, 100064, 109445, 118720, 125080, 131334, 132160, 150096, 175112, 178080, 187620, 198240, 200128, 218890, 250160, 262668, 300192, 328335, 350224, 356160, 375240, 396480, 437780, 500320, 525336, 600384, 656670, 700448, 750480, 875560, 1000640, 1050672, 1313340, 1400896, 1500960, 1751120, 2101344, 2626680, 3001920, 3502240, 4202688, 5253360, 7004480, 10506720, 21013440]

約数ペア:

[(1, 21013440), (2, 10506720), (3, 7004480), (4, 5253360), (5, 4202688), (6, 3502240), (7, 3001920), (8, 2626680), (10, 2101344), (12, 1751120), (14, 1500960), (15, 1400896), (16, 1313340), (20, 1050672), (21, 1000640), (24, 875560), (28, 750480), (30, 700448), (32, 656670), (35, 600384), (40, 525336), (42, 500320), (48, 437780), (53, 396480), (56, 375240), (59, 356160), (60, 350224), (64, 328335), (70, 300192), (80, 262668), (84, 250160), (96, 218890), (105, 200128), (106, 198240), (112, 187620), (118, 178080), (120, 175112), (140, 150096), (159, 132160), (160, 131334), (168, 125080), (177, 118720), (192, 109445), (210, 100064), (212, 99120), (224, 93810), (236, 89040), (240, 87556), (265, 79296), (280, 75048), (295, 71232), (318, 66080), (320, 65667), (336, 62540), (354, 59360), (371, 56640), (413, 50880), (420, 50032), (424, 49560), (448, 46905), (472, 44520), (480, 43778), (530, 39648), (560, 37524), (590, 35616), (636, 33040), (672, 31270), (708, 29680), (742, 28320), (795, 26432), (826, 25440), (840, 25016), (848, 24780), (885, 23744), (944, 22260), (960, 21889), (1060, 19824), (1113, 18880), (1120, 18762), (1180, 17808), (1239, 16960), (1272, 16520), (1344, 15635), (1416, 14840), (1484, 14160), (1590, 13216), (1652, 12720), (1680, 12508), (1696, 12390), (1770, 11872), (1855, 11328), (1888, 11130), (2065, 10176), (2120, 9912), (2226, 9440), (2240, 9381), (2360, 8904), (2478, 8480), (2544, 8260), (2832, 7420), (2968, 7080), (3127, 6720), (3180, 6608), (3304, 6360), (3360, 6254), (3392, 6195), (3540, 5936), (3710, 5664), (3776, 5565), (4130, 5088), (4240, 4956), (4452, 4720)]