20675460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2039}}^1$

素因数の和:2077

約数の個数: 72

約数和(自身を含む): 62717760

約数和(自身を除く): 42042300

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 169, 195, 260, 338, 390, 507, 676, 780, 845, 1014, 1690, 2028, 2039, 2535, 3380, 4078, 5070, 6117, 8156, 10140, 10195, 12234, 20390, 24468, 26507, 30585, 40780, 53014, 61170, 79521, 106028, 122340, 132535, 159042, 265070, 318084, 344591, 397605, 530140, 689182, 795210, 1033773, 1378364, 1590420, 1722955, 2067546, 3445910, 4135092, 5168865, 6891820, 10337730, 20675460]

約数ペア:

[(1, 20675460), (2, 10337730), (3, 6891820), (4, 5168865), (5, 4135092), (6, 3445910), (10, 2067546), (12, 1722955), (13, 1590420), (15, 1378364), (20, 1033773), (26, 795210), (30, 689182), (39, 530140), (52, 397605), (60, 344591), (65, 318084), (78, 265070), (130, 159042), (156, 132535), (169, 122340), (195, 106028), (260, 79521), (338, 61170), (390, 53014), (507, 40780), (676, 30585), (780, 26507), (845, 24468), (1014, 20390), (1690, 12234), (2028, 10195), (2039, 10140), (2535, 8156), (3380, 6117), (4078, 5070)]