18380120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1129}}^1$

素因数の和:1188

約数の個数: 64

約数和(自身を含む): 46375200

約数和(自身を除く): 27995080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 37, 40, 44, 55, 74, 88, 110, 148, 185, 220, 296, 370, 407, 440, 740, 814, 1129, 1480, 1628, 2035, 2258, 3256, 4070, 4516, 5645, 8140, 9032, 11290, 12419, 16280, 22580, 24838, 41773, 45160, 49676, 62095, 83546, 99352, 124190, 167092, 208865, 248380, 334184, 417730, 459503, 496760, 835460, 919006, 1670920, 1838012, 2297515, 3676024, 4595030, 9190060, 18380120]

約数ペア:

[(1, 18380120), (2, 9190060), (4, 4595030), (5, 3676024), (8, 2297515), (10, 1838012), (11, 1670920), (20, 919006), (22, 835460), (37, 496760), (40, 459503), (44, 417730), (55, 334184), (74, 248380), (88, 208865), (110, 167092), (148, 124190), (185, 99352), (220, 83546), (296, 62095), (370, 49676), (407, 45160), (440, 41773), (740, 24838), (814, 22580), (1129, 16280), (1480, 12419), (1628, 11290), (2035, 9032), (2258, 8140), (3256, 5645), (4070, 4516)]