21887320

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{859}}^1$

素因数の和:897

約数の個数: 96

約数和(自身を含む): 61765200

約数和(自身を除く): 39877880

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 49, 52, 56, 65, 70, 91, 98, 104, 130, 140, 182, 196, 245, 260, 280, 364, 392, 455, 490, 520, 637, 728, 859, 910, 980, 1274, 1718, 1820, 1960, 2548, 3185, 3436, 3640, 4295, 5096, 6013, 6370, 6872, 8590, 11167, 12026, 12740, 17180, 22334, 24052, 25480, 30065, 34360, 42091, 44668, 48104, 55835, 60130, 78169, 84182, 89336, 111670, 120260, 156338, 168364, 210455, 223340, 240520, 312676, 336728, 390845, 420910, 446680, 547183, 625352, 781690, 841820, 1094366, 1563380, 1683640, 2188732, 2735915, 3126760, 4377464, 5471830, 10943660, 21887320]

約数ペア:

[(1, 21887320), (2, 10943660), (4, 5471830), (5, 4377464), (7, 3126760), (8, 2735915), (10, 2188732), (13, 1683640), (14, 1563380), (20, 1094366), (26, 841820), (28, 781690), (35, 625352), (40, 547183), (49, 446680), (52, 420910), (56, 390845), (65, 336728), (70, 312676), (91, 240520), (98, 223340), (104, 210455), (130, 168364), (140, 156338), (182, 120260), (196, 111670), (245, 89336), (260, 84182), (280, 78169), (364, 60130), (392, 55835), (455, 48104), (490, 44668), (520, 42091), (637, 34360), (728, 30065), (859, 25480), (910, 24052), (980, 22334), (1274, 17180), (1718, 12740), (1820, 12026), (1960, 11167), (2548, 8590), (3185, 6872), (3436, 6370), (3640, 6013), (4295, 5096)]