20865078

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{19}}^3$

素因数の和:91

約数の個数: 72

約数和(自身を含む): 51671880

約数和(自身を除く): 30806802

約数列:

[1, 2, 3, 6, 9, 13, 18, 19, 26, 38, 39, 57, 78, 114, 117, 169, 171, 234, 247, 338, 342, 361, 494, 507, 722, 741, 1014, 1083, 1482, 1521, 2166, 2223, 3042, 3211, 3249, 4446, 4693, 6422, 6498, 6859, 9386, 9633, 13718, 14079, 19266, 20577, 28158, 28899, 41154, 42237, 57798, 61009, 61731, 84474, 89167, 122018, 123462, 178334, 183027, 267501, 366054, 535002, 549081, 802503, 1098162, 1159171, 1605006, 2318342, 3477513, 6955026, 10432539, 20865078]

約数ペア:

[(1, 20865078), (2, 10432539), (3, 6955026), (6, 3477513), (9, 2318342), (13, 1605006), (18, 1159171), (19, 1098162), (26, 802503), (38, 549081), (39, 535002), (57, 366054), (78, 267501), (114, 183027), (117, 178334), (169, 123462), (171, 122018), (234, 89167), (247, 84474), (338, 61731), (342, 61009), (361, 57798), (494, 42237), (507, 41154), (722, 28899), (741, 28158), (1014, 20577), (1083, 19266), (1482, 14079), (1521, 13718), (2166, 9633), (2223, 9386), (3042, 6859), (3211, 6498), (3249, 6422), (4446, 4693)]