28900980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{307}}^1\times {\mathrm{523}}^1$

素因数の和:845

約数の個数: 72

約数和(自身を含む): 88120032

約数和(自身を除く): 59219052

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 307, 523, 614, 921, 1046, 1228, 1535, 1569, 1842, 2092, 2615, 2763, 3070, 3138, 3684, 4605, 4707, 5230, 5526, 6140, 6276, 7845, 9210, 9414, 10460, 11052, 13815, 15690, 18420, 18828, 23535, 27630, 31380, 47070, 55260, 94140, 160561, 321122, 481683, 642244, 802805, 963366, 1445049, 1605610, 1926732, 2408415, 2890098, 3211220, 4816830, 5780196, 7225245, 9633660, 14450490, 28900980]

約数ペア:

[(1, 28900980), (2, 14450490), (3, 9633660), (4, 7225245), (5, 5780196), (6, 4816830), (9, 3211220), (10, 2890098), (12, 2408415), (15, 1926732), (18, 1605610), (20, 1445049), (30, 963366), (36, 802805), (45, 642244), (60, 481683), (90, 321122), (180, 160561), (307, 94140), (523, 55260), (614, 47070), (921, 31380), (1046, 27630), (1228, 23535), (1535, 18828), (1569, 18420), (1842, 15690), (2092, 13815), (2615, 11052), (2763, 10460), (3070, 9414), (3138, 9210), (3684, 7845), (4605, 6276), (4707, 6140), (5230, 5526)]