20957860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{439}}^1$

素因数の和:497

約数の個数: 96

約数和(自身を含む): 56770560

約数和(自身を除く): 35812700

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 31, 35, 44, 55, 62, 70, 77, 110, 124, 140, 154, 155, 217, 220, 308, 310, 341, 385, 434, 439, 620, 682, 770, 868, 878, 1085, 1364, 1540, 1705, 1756, 2170, 2195, 2387, 3073, 3410, 4340, 4390, 4774, 4829, 6146, 6820, 8780, 9548, 9658, 11935, 12292, 13609, 15365, 19316, 23870, 24145, 27218, 30730, 33803, 47740, 48290, 54436, 61460, 67606, 68045, 95263, 96580, 135212, 136090, 149699, 169015, 190526, 272180, 299398, 338030, 381052, 476315, 598796, 676060, 748495, 952630, 1047893, 1496990, 1905260, 2095786, 2993980, 4191572, 5239465, 10478930, 20957860]

約数ペア:

[(1, 20957860), (2, 10478930), (4, 5239465), (5, 4191572), (7, 2993980), (10, 2095786), (11, 1905260), (14, 1496990), (20, 1047893), (22, 952630), (28, 748495), (31, 676060), (35, 598796), (44, 476315), (55, 381052), (62, 338030), (70, 299398), (77, 272180), (110, 190526), (124, 169015), (140, 149699), (154, 136090), (155, 135212), (217, 96580), (220, 95263), (308, 68045), (310, 67606), (341, 61460), (385, 54436), (434, 48290), (439, 47740), (620, 33803), (682, 30730), (770, 27218), (868, 24145), (878, 23870), (1085, 19316), (1364, 15365), (1540, 13609), (1705, 12292), (1756, 11935), (2170, 9658), (2195, 9548), (2387, 8780), (3073, 6820), (3410, 6146), (4340, 4829), (4390, 4774)]