20778367040

素因数分解:

$2^6\times 5^1\times {\mathrm{41}}^1\times {\mathrm{977}}^1\times {\mathrm{1621}}^1$

素因数の和:2656

約数の個数: 112

約数和(自身を含む): 50768457264

約数和(自身を除く): 29990090224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 160, 164, 205, 320, 328, 410, 656, 820, 977, 1312, 1621, 1640, 1954, 2624, 3242, 3280, 3908, 4885, 6484, 6560, 7816, 8105, 9770, 12968, 13120, 15632, 16210, 19540, 25936, 31264, 32420, 39080, 40057, 51872, 62528, 64840, 66461, 78160, 80114, 103744, 129680, 132922, 156320, 160228, 200285, 259360, 265844, 312640, 320456, 332305, 400570, 518720, 531688, 640912, 664610, 801140, 1063376, 1281824, 1329220, 1583717, 1602280, 2126752, 2563648, 2658440, 3167434, 3204560, 4253504, 5316880, 6334868, 6409120, 7918585, 10633760, 12669736, 12818240, 15837170, 21267520, 25339472, 31674340, 50678944, 63348680, 64932397, 101357888, 126697360, 129864794, 253394720, 259729588, 324661985, 506789440, 519459176, 649323970, 1038918352, 1298647940, 2077836704, 2597295880, 4155673408, 5194591760, 10389183520, 20778367040]

約数ペア:

[(1, 20778367040), (2, 10389183520), (4, 5194591760), (5, 4155673408), (8, 2597295880), (10, 2077836704), (16, 1298647940), (20, 1038918352), (32, 649323970), (40, 519459176), (41, 506789440), (64, 324661985), (80, 259729588), (82, 253394720), (160, 129864794), (164, 126697360), (205, 101357888), (320, 64932397), (328, 63348680), (410, 50678944), (656, 31674340), (820, 25339472), (977, 21267520), (1312, 15837170), (1621, 12818240), (1640, 12669736), (1954, 10633760), (2624, 7918585), (3242, 6409120), (3280, 6334868), (3908, 5316880), (4885, 4253504), (6484, 3204560), (6560, 3167434), (7816, 2658440), (8105, 2563648), (9770, 2126752), (12968, 1602280), (13120, 1583717), (15632, 1329220), (16210, 1281824), (19540, 1063376), (25936, 801140), (31264, 664610), (32420, 640912), (39080, 531688), (40057, 518720), (51872, 400570), (62528, 332305), (64840, 320456), (66461, 312640), (78160, 265844), (80114, 259360), (103744, 200285), (129680, 160228), (132922, 156320)]