20449680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{613}}^1$

素因数の和:768

約数の個数: 80

約数和(自身を含む): 63954240

約数和(自身を除く): 43504560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 139, 240, 278, 417, 556, 613, 695, 834, 1112, 1226, 1390, 1668, 1839, 2085, 2224, 2452, 2780, 3065, 3336, 3678, 4170, 4904, 5560, 6130, 6672, 7356, 8340, 9195, 9808, 11120, 12260, 14712, 16680, 18390, 24520, 29424, 33360, 36780, 49040, 73560, 85207, 147120, 170414, 255621, 340828, 426035, 511242, 681656, 852070, 1022484, 1278105, 1363312, 1704140, 2044968, 2556210, 3408280, 4089936, 5112420, 6816560, 10224840, 20449680]

約数ペア:

[(1, 20449680), (2, 10224840), (3, 6816560), (4, 5112420), (5, 4089936), (6, 3408280), (8, 2556210), (10, 2044968), (12, 1704140), (15, 1363312), (16, 1278105), (20, 1022484), (24, 852070), (30, 681656), (40, 511242), (48, 426035), (60, 340828), (80, 255621), (120, 170414), (139, 147120), (240, 85207), (278, 73560), (417, 49040), (556, 36780), (613, 33360), (695, 29424), (834, 24520), (1112, 18390), (1226, 16680), (1390, 14712), (1668, 12260), (1839, 11120), (2085, 9808), (2224, 9195), (2452, 8340), (2780, 7356), (3065, 6672), (3336, 6130), (3678, 5560), (4170, 4904)]