40638640

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{1481}}^1$

素因数の和:1515

約数の個数: 80

約数和(自身を含む): 110260800

約数和(自身を除く): 69622160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 343, 392, 490, 560, 686, 784, 980, 1372, 1481, 1715, 1960, 2744, 2962, 3430, 3920, 5488, 5924, 6860, 7405, 10367, 11848, 13720, 14810, 20734, 23696, 27440, 29620, 41468, 51835, 59240, 72569, 82936, 103670, 118480, 145138, 165872, 207340, 290276, 362845, 414680, 507983, 580552, 725690, 829360, 1015966, 1161104, 1451380, 2031932, 2539915, 2902760, 4063864, 5079830, 5805520, 8127728, 10159660, 20319320, 40638640]

約数ペア:

[(1, 40638640), (2, 20319320), (4, 10159660), (5, 8127728), (7, 5805520), (8, 5079830), (10, 4063864), (14, 2902760), (16, 2539915), (20, 2031932), (28, 1451380), (35, 1161104), (40, 1015966), (49, 829360), (56, 725690), (70, 580552), (80, 507983), (98, 414680), (112, 362845), (140, 290276), (196, 207340), (245, 165872), (280, 145138), (343, 118480), (392, 103670), (490, 82936), (560, 72569), (686, 59240), (784, 51835), (980, 41468), (1372, 29620), (1481, 27440), (1715, 23696), (1960, 20734), (2744, 14810), (2962, 13720), (3430, 11848), (3920, 10367), (5488, 7405), (5924, 6860)]