20756820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{677}}^1$

素因数の和:769

約数の個数: 96

約数和(自身を含む): 67431168

約数和(自身を除く): 46674348

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 73, 84, 105, 140, 146, 210, 219, 292, 365, 420, 438, 511, 677, 730, 876, 1022, 1095, 1354, 1460, 1533, 2031, 2044, 2190, 2555, 2708, 3066, 3385, 4062, 4380, 4739, 5110, 6132, 6770, 7665, 8124, 9478, 10155, 10220, 13540, 14217, 15330, 18956, 20310, 23695, 28434, 30660, 40620, 47390, 49421, 56868, 71085, 94780, 98842, 142170, 148263, 197684, 247105, 284340, 296526, 345947, 494210, 593052, 691894, 741315, 988420, 1037841, 1383788, 1482630, 1729735, 2075682, 2965260, 3459470, 4151364, 5189205, 6918940, 10378410, 20756820]

約数ペア:

[(1, 20756820), (2, 10378410), (3, 6918940), (4, 5189205), (5, 4151364), (6, 3459470), (7, 2965260), (10, 2075682), (12, 1729735), (14, 1482630), (15, 1383788), (20, 1037841), (21, 988420), (28, 741315), (30, 691894), (35, 593052), (42, 494210), (60, 345947), (70, 296526), (73, 284340), (84, 247105), (105, 197684), (140, 148263), (146, 142170), (210, 98842), (219, 94780), (292, 71085), (365, 56868), (420, 49421), (438, 47390), (511, 40620), (677, 30660), (730, 28434), (876, 23695), (1022, 20310), (1095, 18956), (1354, 15330), (1460, 14217), (1533, 13540), (2031, 10220), (2044, 10155), (2190, 9478), (2555, 8124), (2708, 7665), (3066, 6770), (3385, 6132), (4062, 5110), (4380, 4739)]