20319320

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{1481}}^1$

素因数の和:1513

約数の個数: 64

約数和(自身を含む): 53352000

約数和(自身を除く): 33032680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 343, 392, 490, 686, 980, 1372, 1481, 1715, 1960, 2744, 2962, 3430, 5924, 6860, 7405, 10367, 11848, 13720, 14810, 20734, 29620, 41468, 51835, 59240, 72569, 82936, 103670, 145138, 207340, 290276, 362845, 414680, 507983, 580552, 725690, 1015966, 1451380, 2031932, 2539915, 2902760, 4063864, 5079830, 10159660, 20319320]

約数ペア:

[(1, 20319320), (2, 10159660), (4, 5079830), (5, 4063864), (7, 2902760), (8, 2539915), (10, 2031932), (14, 1451380), (20, 1015966), (28, 725690), (35, 580552), (40, 507983), (49, 414680), (56, 362845), (70, 290276), (98, 207340), (140, 145138), (196, 103670), (245, 82936), (280, 72569), (343, 59240), (392, 51835), (490, 41468), (686, 29620), (980, 20734), (1372, 14810), (1481, 13720), (1715, 11848), (1960, 10367), (2744, 7405), (2962, 6860), (3430, 5924)]