20867360

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{3181}}^1$

素因数の和:3237

約数の個数: 48

約数和(自身を含む): 50517432

約数和(自身を除く): 29650072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 160, 164, 205, 328, 410, 656, 820, 1312, 1640, 3181, 3280, 6362, 6560, 12724, 15905, 25448, 31810, 50896, 63620, 101792, 127240, 130421, 254480, 260842, 508960, 521684, 652105, 1043368, 1304210, 2086736, 2608420, 4173472, 5216840, 10433680, 20867360]

約数ペア:

[(1, 20867360), (2, 10433680), (4, 5216840), (5, 4173472), (8, 2608420), (10, 2086736), (16, 1304210), (20, 1043368), (32, 652105), (40, 521684), (41, 508960), (80, 260842), (82, 254480), (160, 130421), (164, 127240), (205, 101792), (328, 63620), (410, 50896), (656, 31810), (820, 25448), (1312, 15905), (1640, 12724), (3181, 6560), (3280, 6362)]