401080940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{107}}^1\times {\mathrm{1109}}^1$

素因数の和:1251

約数の個数: 72

約数和(自身を含む): 921397680

約数和(自身を除く): 520316740

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 107, 130, 169, 214, 260, 338, 428, 535, 676, 845, 1070, 1109, 1391, 1690, 2140, 2218, 2782, 3380, 4436, 5545, 5564, 6955, 11090, 13910, 14417, 18083, 22180, 27820, 28834, 36166, 57668, 72085, 72332, 90415, 118663, 144170, 180830, 187421, 237326, 288340, 361660, 374842, 474652, 593315, 749684, 937105, 1186630, 1542619, 1874210, 2373260, 3085238, 3748420, 6170476, 7713095, 15426190, 20054047, 30852380, 40108094, 80216188, 100270235, 200540470, 401080940]

約数ペア:

[(1, 401080940), (2, 200540470), (4, 100270235), (5, 80216188), (10, 40108094), (13, 30852380), (20, 20054047), (26, 15426190), (52, 7713095), (65, 6170476), (107, 3748420), (130, 3085238), (169, 2373260), (214, 1874210), (260, 1542619), (338, 1186630), (428, 937105), (535, 749684), (676, 593315), (845, 474652), (1070, 374842), (1109, 361660), (1391, 288340), (1690, 237326), (2140, 187421), (2218, 180830), (2782, 144170), (3380, 118663), (4436, 90415), (5545, 72332), (5564, 72085), (6955, 57668), (11090, 36166), (13910, 28834), (14417, 27820), (18083, 22180)]