20613560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{4259}}^1$

素因数の和:4292

約数の個数: 48

約数和(自身を含む): 50992200

約数和(自身を除く): 30378640

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 4259, 4840, 8518, 17036, 21295, 34072, 42590, 46849, 85180, 93698, 170360, 187396, 234245, 374792, 468490, 515339, 936980, 1030678, 1873960, 2061356, 2576695, 4122712, 5153390, 10306780, 20613560]

約数ペア:

[(1, 20613560), (2, 10306780), (4, 5153390), (5, 4122712), (8, 2576695), (10, 2061356), (11, 1873960), (20, 1030678), (22, 936980), (40, 515339), (44, 468490), (55, 374792), (88, 234245), (110, 187396), (121, 170360), (220, 93698), (242, 85180), (440, 46849), (484, 42590), (605, 34072), (968, 21295), (1210, 17036), (2420, 8518), (4259, 4840)]