21869540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{1291}}^1$

素因数の和:1329

約数の個数: 72

約数和(自身を含む): 57736896

約数和(自身を除く): 35867356

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 121, 140, 154, 220, 242, 308, 385, 484, 605, 770, 847, 1210, 1291, 1540, 1694, 2420, 2582, 3388, 4235, 5164, 6455, 8470, 9037, 12910, 14201, 16940, 18074, 25820, 28402, 36148, 45185, 56804, 71005, 90370, 99407, 142010, 156211, 180740, 198814, 284020, 312422, 397628, 497035, 624844, 781055, 994070, 1093477, 1562110, 1988140, 2186954, 3124220, 4373908, 5467385, 10934770, 21869540]

約数ペア:

[(1, 21869540), (2, 10934770), (4, 5467385), (5, 4373908), (7, 3124220), (10, 2186954), (11, 1988140), (14, 1562110), (20, 1093477), (22, 994070), (28, 781055), (35, 624844), (44, 497035), (55, 397628), (70, 312422), (77, 284020), (110, 198814), (121, 180740), (140, 156211), (154, 142010), (220, 99407), (242, 90370), (308, 71005), (385, 56804), (484, 45185), (605, 36148), (770, 28402), (847, 25820), (1210, 18074), (1291, 16940), (1540, 14201), (1694, 12910), (2420, 9037), (2582, 8470), (3388, 6455), (4235, 5164)]