71440720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{941}}^1$

素因数の和:1040

約数の個数: 80

約数和(自身を含む): 181519632

約数和(自身を除く): 110078912

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 73, 80, 104, 130, 146, 208, 260, 292, 365, 520, 584, 730, 941, 949, 1040, 1168, 1460, 1882, 1898, 2920, 3764, 3796, 4705, 4745, 5840, 7528, 7592, 9410, 9490, 12233, 15056, 15184, 18820, 18980, 24466, 37640, 37960, 48932, 61165, 68693, 75280, 75920, 97864, 122330, 137386, 195728, 244660, 274772, 343465, 489320, 549544, 686930, 893009, 978640, 1099088, 1373860, 1786018, 2747720, 3572036, 4465045, 5495440, 7144072, 8930090, 14288144, 17860180, 35720360, 71440720]

約数ペア:

[(1, 71440720), (2, 35720360), (4, 17860180), (5, 14288144), (8, 8930090), (10, 7144072), (13, 5495440), (16, 4465045), (20, 3572036), (26, 2747720), (40, 1786018), (52, 1373860), (65, 1099088), (73, 978640), (80, 893009), (104, 686930), (130, 549544), (146, 489320), (208, 343465), (260, 274772), (292, 244660), (365, 195728), (520, 137386), (584, 122330), (730, 97864), (941, 75920), (949, 75280), (1040, 68693), (1168, 61165), (1460, 48932), (1882, 37960), (1898, 37640), (2920, 24466), (3764, 18980), (3796, 18820), (4705, 15184), (4745, 15056), (5840, 12233), (7528, 9490), (7592, 9410)]