20490120

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1$

素因数の和:244

約数の個数: 192

約数和(自身を含む): 78174720

約数和(自身を除く): 57684600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 47, 56, 60, 63, 70, 72, 84, 90, 94, 105, 120, 126, 140, 141, 168, 173, 180, 188, 210, 235, 252, 280, 282, 315, 329, 346, 360, 376, 420, 423, 470, 504, 519, 564, 630, 658, 692, 705, 840, 846, 865, 940, 987, 1038, 1128, 1211, 1260, 1316, 1384, 1410, 1557, 1645, 1692, 1730, 1880, 1974, 2076, 2115, 2422, 2520, 2595, 2632, 2820, 2961, 3114, 3290, 3384, 3460, 3633, 3948, 4152, 4230, 4844, 4935, 5190, 5640, 5922, 6055, 6228, 6580, 6920, 7266, 7785, 7896, 8131, 8460, 9688, 9870, 10380, 10899, 11844, 12110, 12456, 13160, 14532, 14805, 15570, 16262, 16920, 18165, 19740, 20760, 21798, 23688, 24220, 24393, 29064, 29610, 31140, 32524, 36330, 39480, 40655, 43596, 48440, 48786, 54495, 56917, 59220, 62280, 65048, 72660, 73179, 81310, 87192, 97572, 108990, 113834, 118440, 121965, 145320, 146358, 162620, 170751, 195144, 217980, 227668, 243930, 284585, 292716, 325240, 341502, 365895, 435960, 455336, 487860, 512253, 569170, 585432, 683004, 731790, 853755, 975720, 1024506, 1138340, 1366008, 1463580, 1707510, 2049012, 2276680, 2561265, 2927160, 3415020, 4098024, 5122530, 6830040, 10245060, 20490120]

約数ペア:

[(1, 20490120), (2, 10245060), (3, 6830040), (4, 5122530), (5, 4098024), (6, 3415020), (7, 2927160), (8, 2561265), (9, 2276680), (10, 2049012), (12, 1707510), (14, 1463580), (15, 1366008), (18, 1138340), (20, 1024506), (21, 975720), (24, 853755), (28, 731790), (30, 683004), (35, 585432), (36, 569170), (40, 512253), (42, 487860), (45, 455336), (47, 435960), (56, 365895), (60, 341502), (63, 325240), (70, 292716), (72, 284585), (84, 243930), (90, 227668), (94, 217980), (105, 195144), (120, 170751), (126, 162620), (140, 146358), (141, 145320), (168, 121965), (173, 118440), (180, 113834), (188, 108990), (210, 97572), (235, 87192), (252, 81310), (280, 73179), (282, 72660), (315, 65048), (329, 62280), (346, 59220), (360, 56917), (376, 54495), (420, 48786), (423, 48440), (470, 43596), (504, 40655), (519, 39480), (564, 36330), (630, 32524), (658, 31140), (692, 29610), (705, 29064), (840, 24393), (846, 24220), (865, 23688), (940, 21798), (987, 20760), (1038, 19740), (1128, 18165), (1211, 16920), (1260, 16262), (1316, 15570), (1384, 14805), (1410, 14532), (1557, 13160), (1645, 12456), (1692, 12110), (1730, 11844), (1880, 10899), (1974, 10380), (2076, 9870), (2115, 9688), (2422, 8460), (2520, 8131), (2595, 7896), (2632, 7785), (2820, 7266), (2961, 6920), (3114, 6580), (3290, 6228), (3384, 6055), (3460, 5922), (3633, 5640), (3948, 5190), (4152, 4935), (4230, 4844)]