400935780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{318203}}^1$

素因数の和:318225

約数の個数: 72

約数和(自身を含む): 1389915072

約数和(自身を除く): 988979292

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 318203, 636406, 954609, 1272812, 1591015, 1909218, 2227421, 2863827, 3182030, 3818436, 4454842, 4773045, 5727654, 6364060, 6682263, 8909684, 9546090, 11137105, 11455308, 13364526, 14319135, 19092180, 20046789, 22274210, 26729052, 28638270, 33411315, 40093578, 44548420, 57276540, 66822630, 80187156, 100233945, 133645260, 200467890, 400935780]

約数ペア:

[(1, 400935780), (2, 200467890), (3, 133645260), (4, 100233945), (5, 80187156), (6, 66822630), (7, 57276540), (9, 44548420), (10, 40093578), (12, 33411315), (14, 28638270), (15, 26729052), (18, 22274210), (20, 20046789), (21, 19092180), (28, 14319135), (30, 13364526), (35, 11455308), (36, 11137105), (42, 9546090), (45, 8909684), (60, 6682263), (63, 6364060), (70, 5727654), (84, 4773045), (90, 4454842), (105, 3818436), (126, 3182030), (140, 2863827), (180, 2227421), (210, 1909218), (252, 1591015), (315, 1272812), (420, 954609), (630, 636406), (1260, 318203)]