18354880

素因数分解:

$2^6\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1399}}^1$

素因数の和:1457

約数の個数: 56

約数和(自身を含む): 44805600

約数和(自身を除く): 26450720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 160, 164, 205, 320, 328, 410, 656, 820, 1312, 1399, 1640, 2624, 2798, 3280, 5596, 6560, 6995, 11192, 13120, 13990, 22384, 27980, 44768, 55960, 57359, 89536, 111920, 114718, 223840, 229436, 286795, 447680, 458872, 573590, 917744, 1147180, 1835488, 2294360, 3670976, 4588720, 9177440, 18354880]

約数ペア:

[(1, 18354880), (2, 9177440), (4, 4588720), (5, 3670976), (8, 2294360), (10, 1835488), (16, 1147180), (20, 917744), (32, 573590), (40, 458872), (41, 447680), (64, 286795), (80, 229436), (82, 223840), (160, 114718), (164, 111920), (205, 89536), (320, 57359), (328, 55960), (410, 44768), (656, 27980), (820, 22384), (1312, 13990), (1399, 13120), (1640, 11192), (2624, 6995), (2798, 6560), (3280, 5596)]