21547960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1877}}^1$

素因数の和:1936

約数の個数: 64

約数和(自身を含む): 56790720

約数和(自身を除く): 35242760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 56, 70, 82, 140, 164, 205, 280, 287, 328, 410, 574, 820, 1148, 1435, 1640, 1877, 2296, 2870, 3754, 5740, 7508, 9385, 11480, 13139, 15016, 18770, 26278, 37540, 52556, 65695, 75080, 76957, 105112, 131390, 153914, 262780, 307828, 384785, 525560, 538699, 615656, 769570, 1077398, 1539140, 2154796, 2693495, 3078280, 4309592, 5386990, 10773980, 21547960]

約数ペア:

[(1, 21547960), (2, 10773980), (4, 5386990), (5, 4309592), (7, 3078280), (8, 2693495), (10, 2154796), (14, 1539140), (20, 1077398), (28, 769570), (35, 615656), (40, 538699), (41, 525560), (56, 384785), (70, 307828), (82, 262780), (140, 153914), (164, 131390), (205, 105112), (280, 76957), (287, 75080), (328, 65695), (410, 52556), (574, 37540), (820, 26278), (1148, 18770), (1435, 15016), (1640, 13139), (1877, 11480), (2296, 9385), (2870, 7508), (3754, 5740)]