2169869840

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{304757}}^1$

素因数の和:304859

約数の個数: 40

約数和(自身を含む): 5101648920

約数和(自身を除く): 2931779080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 304757, 609514, 1219028, 1523785, 2438056, 3047570, 4876112, 6095140, 12190280, 24380560, 27123373, 54246746, 108493492, 135616865, 216986984, 271233730, 433973968, 542467460, 1084934920, 2169869840]

約数ペア:

[(1, 2169869840), (2, 1084934920), (4, 542467460), (5, 433973968), (8, 271233730), (10, 216986984), (16, 135616865), (20, 108493492), (40, 54246746), (80, 27123373), (89, 24380560), (178, 12190280), (356, 6095140), (445, 4876112), (712, 3047570), (890, 2438056), (1424, 1523785), (1780, 1219028), (3560, 609514), (7120, 304757)]