400721040

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{185519}}^1$

素因数の和:185541

約数の個数: 80

約数和(自身を含む): 1380268800

約数和(自身を除く): 979547760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 90, 108, 120, 135, 144, 180, 216, 240, 270, 360, 432, 540, 720, 1080, 2160, 185519, 371038, 556557, 742076, 927595, 1113114, 1484152, 1669671, 1855190, 2226228, 2782785, 2968304, 3339342, 3710380, 4452456, 5009013, 5565570, 6678684, 7420760, 8348355, 8904912, 10018026, 11131140, 13357368, 14841520, 16696710, 20036052, 22262280, 25045065, 26714736, 33393420, 40072104, 44524560, 50090130, 66786840, 80144208, 100180260, 133573680, 200360520, 400721040]

約数ペア:

[(1, 400721040), (2, 200360520), (3, 133573680), (4, 100180260), (5, 80144208), (6, 66786840), (8, 50090130), (9, 44524560), (10, 40072104), (12, 33393420), (15, 26714736), (16, 25045065), (18, 22262280), (20, 20036052), (24, 16696710), (27, 14841520), (30, 13357368), (36, 11131140), (40, 10018026), (45, 8904912), (48, 8348355), (54, 7420760), (60, 6678684), (72, 5565570), (80, 5009013), (90, 4452456), (108, 3710380), (120, 3339342), (135, 2968304), (144, 2782785), (180, 2226228), (216, 1855190), (240, 1669671), (270, 1484152), (360, 1113114), (432, 927595), (540, 742076), (720, 556557), (1080, 371038), (2160, 185519)]