28243980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{907}}^1$

素因数の和:1095

約数の個数: 72

約数和(自身を含む): 86263632

約数和(自身を除く): 58019652

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 173, 180, 346, 519, 692, 865, 907, 1038, 1557, 1730, 1814, 2076, 2595, 2721, 3114, 3460, 3628, 4535, 5190, 5442, 6228, 7785, 8163, 9070, 10380, 10884, 13605, 15570, 16326, 18140, 27210, 31140, 32652, 40815, 54420, 81630, 156911, 163260, 313822, 470733, 627644, 784555, 941466, 1412199, 1569110, 1882932, 2353665, 2824398, 3138220, 4707330, 5648796, 7060995, 9414660, 14121990, 28243980]

約数ペア:

[(1, 28243980), (2, 14121990), (3, 9414660), (4, 7060995), (5, 5648796), (6, 4707330), (9, 3138220), (10, 2824398), (12, 2353665), (15, 1882932), (18, 1569110), (20, 1412199), (30, 941466), (36, 784555), (45, 627644), (60, 470733), (90, 313822), (173, 163260), (180, 156911), (346, 81630), (519, 54420), (692, 40815), (865, 32652), (907, 31140), (1038, 27210), (1557, 18140), (1730, 16326), (1814, 15570), (2076, 13605), (2595, 10884), (2721, 10380), (3114, 9070), (3460, 8163), (3628, 7785), (4535, 6228), (5190, 5442)]