28017920

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1$

素因数の和:140

約数の個数: 144

約数和(自身を含む): 79470720

約数和(自身を除く): 51452800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 53, 56, 59, 64, 70, 80, 106, 112, 118, 128, 140, 160, 212, 224, 236, 256, 265, 280, 295, 320, 371, 413, 424, 448, 472, 530, 560, 590, 640, 742, 826, 848, 896, 944, 1060, 1120, 1180, 1280, 1484, 1652, 1696, 1792, 1855, 1888, 2065, 2120, 2240, 2360, 2968, 3127, 3304, 3392, 3710, 3776, 4130, 4240, 4480, 4720, 5936, 6254, 6608, 6784, 7420, 7552, 8260, 8480, 8960, 9440, 11872, 12508, 13216, 13568, 14840, 15104, 15635, 16520, 16960, 18880, 21889, 23744, 25016, 26432, 29680, 31270, 33040, 33920, 37760, 43778, 47488, 50032, 52864, 59360, 62540, 66080, 67840, 75520, 87556, 94976, 100064, 105728, 109445, 118720, 125080, 132160, 175112, 200128, 218890, 237440, 250160, 264320, 350224, 400256, 437780, 474880, 500320, 528640, 700448, 800512, 875560, 1000640, 1400896, 1751120, 2001280, 2801792, 3502240, 4002560, 5603584, 7004480, 14008960, 28017920]

約数ペア:

[(1, 28017920), (2, 14008960), (4, 7004480), (5, 5603584), (7, 4002560), (8, 3502240), (10, 2801792), (14, 2001280), (16, 1751120), (20, 1400896), (28, 1000640), (32, 875560), (35, 800512), (40, 700448), (53, 528640), (56, 500320), (59, 474880), (64, 437780), (70, 400256), (80, 350224), (106, 264320), (112, 250160), (118, 237440), (128, 218890), (140, 200128), (160, 175112), (212, 132160), (224, 125080), (236, 118720), (256, 109445), (265, 105728), (280, 100064), (295, 94976), (320, 87556), (371, 75520), (413, 67840), (424, 66080), (448, 62540), (472, 59360), (530, 52864), (560, 50032), (590, 47488), (640, 43778), (742, 37760), (826, 33920), (848, 33040), (896, 31270), (944, 29680), (1060, 26432), (1120, 25016), (1180, 23744), (1280, 21889), (1484, 18880), (1652, 16960), (1696, 16520), (1792, 15635), (1855, 15104), (1888, 14840), (2065, 13568), (2120, 13216), (2240, 12508), (2360, 11872), (2968, 9440), (3127, 8960), (3304, 8480), (3392, 8260), (3710, 7552), (3776, 7420), (4130, 6784), (4240, 6608), (4480, 6254), (4720, 5936)]