20123157800

素因数分解:

$2^3\times 5^2\times {\mathrm{1531}}^1\times {\mathrm{65719}}^1$

素因数の和:67266

約数の個数: 48

約数和(自身を含む): 46817613600

約数和(自身を除く): 26694455800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 1531, 3062, 6124, 7655, 12248, 15310, 30620, 38275, 61240, 65719, 76550, 131438, 153100, 262876, 306200, 328595, 525752, 657190, 1314380, 1642975, 2628760, 3285950, 6571900, 13143800, 100615789, 201231578, 402463156, 503078945, 804926312, 1006157890, 2012315780, 2515394725, 4024631560, 5030789450, 10061578900, 20123157800]

約数ペア:

[(1, 20123157800), (2, 10061578900), (4, 5030789450), (5, 4024631560), (8, 2515394725), (10, 2012315780), (20, 1006157890), (25, 804926312), (40, 503078945), (50, 402463156), (100, 201231578), (200, 100615789), (1531, 13143800), (3062, 6571900), (6124, 3285950), (7655, 2628760), (12248, 1642975), (15310, 1314380), (30620, 657190), (38275, 525752), (61240, 328595), (65719, 306200), (76550, 262876), (131438, 153100)]