400201480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{23431}}^1$

素因数の和:23510

約数の個数: 64

約数和(自身を含む): 1046004480

約数和(自身を除く): 645803000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 61, 70, 122, 140, 244, 280, 305, 427, 488, 610, 854, 1220, 1708, 2135, 2440, 3416, 4270, 8540, 17080, 23431, 46862, 93724, 117155, 164017, 187448, 234310, 328034, 468620, 656068, 820085, 937240, 1312136, 1429291, 1640170, 2858582, 3280340, 5717164, 6560680, 7146455, 10005037, 11434328, 14292910, 20010074, 28585820, 40020148, 50025185, 57171640, 80040296, 100050370, 200100740, 400201480]

約数ペア:

[(1, 400201480), (2, 200100740), (4, 100050370), (5, 80040296), (7, 57171640), (8, 50025185), (10, 40020148), (14, 28585820), (20, 20010074), (28, 14292910), (35, 11434328), (40, 10005037), (56, 7146455), (61, 6560680), (70, 5717164), (122, 3280340), (140, 2858582), (244, 1640170), (280, 1429291), (305, 1312136), (427, 937240), (488, 820085), (610, 656068), (854, 468620), (1220, 328034), (1708, 234310), (2135, 187448), (2440, 164017), (3416, 117155), (4270, 93724), (8540, 46862), (17080, 23431)]