18120380

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{521}}^1$

素因数の和:614

約数の個数: 48

約数和(自身を含む): 39989376

約数和(自身を除く): 21868996

約数列:

[1, 2, 4, 5, 10, 20, 37, 47, 74, 94, 148, 185, 188, 235, 370, 470, 521, 740, 940, 1042, 1739, 2084, 2605, 3478, 5210, 6956, 8695, 10420, 17390, 19277, 24487, 34780, 38554, 48974, 77108, 96385, 97948, 122435, 192770, 244870, 385540, 489740, 906019, 1812038, 3624076, 4530095, 9060190, 18120380]

約数ペア:

[(1, 18120380), (2, 9060190), (4, 4530095), (5, 3624076), (10, 1812038), (20, 906019), (37, 489740), (47, 385540), (74, 244870), (94, 192770), (148, 122435), (185, 97948), (188, 96385), (235, 77108), (370, 48974), (470, 38554), (521, 34780), (740, 24487), (940, 19277), (1042, 17390), (1739, 10420), (2084, 8695), (2605, 6956), (3478, 5210)]