21697740

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1747}}^1$

素因数の和:1788

約数の個数: 96

約数和(自身を含む): 70479360

約数和(自身を除く): 48781620

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, 1747, 2070, 2484, 3105, 3494, 4140, 5241, 6210, 6988, 8735, 10482, 12420, 15723, 17470, 20964, 26205, 31446, 34940, 40181, 47169, 52410, 62892, 78615, 80362, 94338, 104820, 120543, 157230, 160724, 188676, 200905, 235845, 241086, 314460, 361629, 401810, 471690, 482172, 602715, 723258, 803620, 943380, 1084887, 1205430, 1446516, 1808145, 2169774, 2410860, 3616290, 4339548, 5424435, 7232580, 10848870, 21697740]

約数ペア:

[(1, 21697740), (2, 10848870), (3, 7232580), (4, 5424435), (5, 4339548), (6, 3616290), (9, 2410860), (10, 2169774), (12, 1808145), (15, 1446516), (18, 1205430), (20, 1084887), (23, 943380), (27, 803620), (30, 723258), (36, 602715), (45, 482172), (46, 471690), (54, 401810), (60, 361629), (69, 314460), (90, 241086), (92, 235845), (108, 200905), (115, 188676), (135, 160724), (138, 157230), (180, 120543), (207, 104820), (230, 94338), (270, 80362), (276, 78615), (345, 62892), (414, 52410), (460, 47169), (540, 40181), (621, 34940), (690, 31446), (828, 26205), (1035, 20964), (1242, 17470), (1380, 15723), (1747, 12420), (2070, 10482), (2484, 8735), (3105, 6988), (3494, 6210), (4140, 5241)]