19712964

素因数分解:

$2^2\times 3^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{389}}^1$

素因数の和:540

約数の個数: 48

約数和(自身を含む): 47698560

約数和(自身を除く): 27985596

約数列:

[1, 2, 3, 4, 6, 12, 41, 82, 103, 123, 164, 206, 246, 309, 389, 412, 492, 618, 778, 1167, 1236, 1556, 2334, 4223, 4668, 8446, 12669, 15949, 16892, 25338, 31898, 40067, 47847, 50676, 63796, 80134, 95694, 120201, 160268, 191388, 240402, 480804, 1642747, 3285494, 4928241, 6570988, 9856482, 19712964]

約数ペア:

[(1, 19712964), (2, 9856482), (3, 6570988), (4, 4928241), (6, 3285494), (12, 1642747), (41, 480804), (82, 240402), (103, 191388), (123, 160268), (164, 120201), (206, 95694), (246, 80134), (309, 63796), (389, 50676), (412, 47847), (492, 40067), (618, 31898), (778, 25338), (1167, 16892), (1236, 15949), (1556, 12669), (2334, 8446), (4223, 4668)]