18915660

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1523}}^1$

素因数の和:1564

約数の個数: 96

約数和(自身を含む): 61447680

約数和(自身を除く): 42532020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 27, 30, 36, 45, 46, 54, 60, 69, 90, 92, 108, 115, 135, 138, 180, 207, 230, 270, 276, 345, 414, 460, 540, 621, 690, 828, 1035, 1242, 1380, 1523, 2070, 2484, 3046, 3105, 4140, 4569, 6092, 6210, 7615, 9138, 12420, 13707, 15230, 18276, 22845, 27414, 30460, 35029, 41121, 45690, 54828, 68535, 70058, 82242, 91380, 105087, 137070, 140116, 164484, 175145, 205605, 210174, 274140, 315261, 350290, 411210, 420348, 525435, 630522, 700580, 822420, 945783, 1050870, 1261044, 1576305, 1891566, 2101740, 3152610, 3783132, 4728915, 6305220, 9457830, 18915660]

約数ペア:

[(1, 18915660), (2, 9457830), (3, 6305220), (4, 4728915), (5, 3783132), (6, 3152610), (9, 2101740), (10, 1891566), (12, 1576305), (15, 1261044), (18, 1050870), (20, 945783), (23, 822420), (27, 700580), (30, 630522), (36, 525435), (45, 420348), (46, 411210), (54, 350290), (60, 315261), (69, 274140), (90, 210174), (92, 205605), (108, 175145), (115, 164484), (135, 140116), (138, 137070), (180, 105087), (207, 91380), (230, 82242), (270, 70058), (276, 68535), (345, 54828), (414, 45690), (460, 41121), (540, 35029), (621, 30460), (690, 27414), (828, 22845), (1035, 18276), (1242, 15230), (1380, 13707), (1523, 12420), (2070, 9138), (2484, 7615), (3046, 6210), (3105, 6092), (4140, 4569)]