28747980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{383}}^1$

素因数の和:540

約数の個数: 96

約数和(自身を含む): 90316800

約数和(自身を除く): 61568820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 139, 180, 270, 278, 383, 417, 540, 556, 695, 766, 834, 1149, 1251, 1390, 1532, 1668, 1915, 2085, 2298, 2502, 2780, 3447, 3753, 3830, 4170, 4596, 5004, 5745, 6255, 6894, 7506, 7660, 8340, 10341, 11490, 12510, 13788, 15012, 17235, 18765, 20682, 22980, 25020, 34470, 37530, 41364, 51705, 53237, 68940, 75060, 103410, 106474, 159711, 206820, 212948, 266185, 319422, 479133, 532370, 638844, 798555, 958266, 1064740, 1437399, 1597110, 1916532, 2395665, 2874798, 3194220, 4791330, 5749596, 7186995, 9582660, 14373990, 28747980]

約数ペア:

[(1, 28747980), (2, 14373990), (3, 9582660), (4, 7186995), (5, 5749596), (6, 4791330), (9, 3194220), (10, 2874798), (12, 2395665), (15, 1916532), (18, 1597110), (20, 1437399), (27, 1064740), (30, 958266), (36, 798555), (45, 638844), (54, 532370), (60, 479133), (90, 319422), (108, 266185), (135, 212948), (139, 206820), (180, 159711), (270, 106474), (278, 103410), (383, 75060), (417, 68940), (540, 53237), (556, 51705), (695, 41364), (766, 37530), (834, 34470), (1149, 25020), (1251, 22980), (1390, 20682), (1532, 18765), (1668, 17235), (1915, 15012), (2085, 13788), (2298, 12510), (2502, 11490), (2780, 10341), (3447, 8340), (3753, 7660), (3830, 7506), (4170, 6894), (4596, 6255), (5004, 5745)]