20105496008

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{401917}}^1$

素因数の和:401986

約数の個数: 48

約数和(自身を含む): 41924066580

約数和(自身を除く): 21818570572

約数列:

[1, 2, 4, 8, 13, 26, 37, 52, 74, 104, 148, 169, 296, 338, 481, 676, 962, 1352, 1924, 3848, 6253, 12506, 25012, 50024, 401917, 803834, 1607668, 3215336, 5224921, 10449842, 14870929, 20899684, 29741858, 41799368, 59483716, 67923973, 118967432, 135847946, 193322077, 271695892, 386644154, 543391784, 773288308, 1546576616, 2513187001, 5026374002, 10052748004, 20105496008]

約数ペア:

[(1, 20105496008), (2, 10052748004), (4, 5026374002), (8, 2513187001), (13, 1546576616), (26, 773288308), (37, 543391784), (52, 386644154), (74, 271695892), (104, 193322077), (148, 135847946), (169, 118967432), (296, 67923973), (338, 59483716), (481, 41799368), (676, 29741858), (962, 20899684), (1352, 14870929), (1924, 10449842), (3848, 5224921), (6253, 3215336), (12506, 1607668), (25012, 803834), (50024, 401917)]