1640667040

素因数分解:

$2^5\times 5^1\times {\mathrm{139}}^1\times {\mathrm{73771}}^1$

素因数の和:73925

約数の個数: 48

約数和(自身を含む): 3904014240

約数和(自身を除く): 2263347200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 139, 160, 278, 556, 695, 1112, 1390, 2224, 2780, 4448, 5560, 11120, 22240, 73771, 147542, 295084, 368855, 590168, 737710, 1180336, 1475420, 2360672, 2950840, 5901680, 10254169, 11803360, 20508338, 41016676, 51270845, 82033352, 102541690, 164066704, 205083380, 328133408, 410166760, 820333520, 1640667040]

約数ペア:

[(1, 1640667040), (2, 820333520), (4, 410166760), (5, 328133408), (8, 205083380), (10, 164066704), (16, 102541690), (20, 82033352), (32, 51270845), (40, 41016676), (80, 20508338), (139, 11803360), (160, 10254169), (278, 5901680), (556, 2950840), (695, 2360672), (1112, 1475420), (1390, 1180336), (2224, 737710), (2780, 590168), (4448, 368855), (5560, 295084), (11120, 147542), (22240, 73771)]