21399660

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1723}}^1$

素因数の和:1764

約数の個数: 96

約数和(自身を含む): 69511680

約数和(自身を除く): 48112020

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, 1723, 2070, 2484, 3105, 3446, 4140, 5169, 6210, 6892, 8615, 10338, 12420, 15507, 17230, 20676, 25845, 31014, 34460, 39629, 46521, 51690, 62028, 77535, 79258, 93042, 103380, 118887, 155070, 158516, 186084, 198145, 232605, 237774, 310140, 356661, 396290, 465210, 475548, 594435, 713322, 792580, 930420, 1069983, 1188870, 1426644, 1783305, 2139966, 2377740, 3566610, 4279932, 5349915, 7133220, 10699830, 21399660]

約数ペア:

[(1, 21399660), (2, 10699830), (3, 7133220), (4, 5349915), (5, 4279932), (6, 3566610), (9, 2377740), (10, 2139966), (12, 1783305), (15, 1426644), (18, 1188870), (20, 1069983), (23, 930420), (27, 792580), (30, 713322), (36, 594435), (45, 475548), (46, 465210), (54, 396290), (60, 356661), (69, 310140), (90, 237774), (92, 232605), (108, 198145), (115, 186084), (135, 158516), (138, 155070), (180, 118887), (207, 103380), (230, 93042), (270, 79258), (276, 77535), (345, 62028), (414, 51690), (460, 46521), (540, 39629), (621, 34460), (690, 31014), (828, 25845), (1035, 20676), (1242, 17230), (1380, 15507), (1723, 12420), (2070, 10338), (2484, 8615), (3105, 6892), (3446, 6210), (4140, 5169)]