137581520

素因数分解:

$2^4\times 5^1\times {\mathrm{389}}^1\times {\mathrm{4421}}^1$

素因数の和:4823

約数の個数: 40

約数和(自身を含む): 320771880

約数和(自身を除く): 183190360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 389, 778, 1556, 1945, 3112, 3890, 4421, 6224, 7780, 8842, 15560, 17684, 22105, 31120, 35368, 44210, 70736, 88420, 176840, 353680, 1719769, 3439538, 6879076, 8598845, 13758152, 17197690, 27516304, 34395380, 68790760, 137581520]

約数ペア:

[(1, 137581520), (2, 68790760), (4, 34395380), (5, 27516304), (8, 17197690), (10, 13758152), (16, 8598845), (20, 6879076), (40, 3439538), (80, 1719769), (389, 353680), (778, 176840), (1556, 88420), (1945, 70736), (3112, 44210), (3890, 35368), (4421, 31120), (6224, 22105), (7780, 17684), (8842, 15560)]