20690280

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4421}}^1$

素因数の和:4451

約数の個数: 96

約数和(自身を含む): 72432360

約数和(自身を除く): 51742080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 30, 36, 39, 40, 45, 52, 60, 65, 72, 78, 90, 104, 117, 120, 130, 156, 180, 195, 234, 260, 312, 360, 390, 468, 520, 585, 780, 936, 1170, 1560, 2340, 4421, 4680, 8842, 13263, 17684, 22105, 26526, 35368, 39789, 44210, 53052, 57473, 66315, 79578, 88420, 106104, 114946, 132630, 159156, 172419, 176840, 198945, 229892, 265260, 287365, 318312, 344838, 397890, 459784, 517257, 530520, 574730, 689676, 795780, 862095, 1034514, 1149460, 1379352, 1591560, 1724190, 2069028, 2298920, 2586285, 3448380, 4138056, 5172570, 6896760, 10345140, 20690280]

約数ペア:

[(1, 20690280), (2, 10345140), (3, 6896760), (4, 5172570), (5, 4138056), (6, 3448380), (8, 2586285), (9, 2298920), (10, 2069028), (12, 1724190), (13, 1591560), (15, 1379352), (18, 1149460), (20, 1034514), (24, 862095), (26, 795780), (30, 689676), (36, 574730), (39, 530520), (40, 517257), (45, 459784), (52, 397890), (60, 344838), (65, 318312), (72, 287365), (78, 265260), (90, 229892), (104, 198945), (117, 176840), (120, 172419), (130, 159156), (156, 132630), (180, 114946), (195, 106104), (234, 88420), (260, 79578), (312, 66315), (360, 57473), (390, 53052), (468, 44210), (520, 39789), (585, 35368), (780, 26526), (936, 22105), (1170, 17684), (1560, 13263), (2340, 8842), (4421, 4680)]