21716040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:191

約数の個数: 128

約数和(自身を含む): 68837760

約数和(自身を除く): 47121720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 37, 40, 60, 67, 73, 74, 111, 120, 134, 146, 148, 185, 201, 219, 222, 268, 292, 296, 335, 365, 370, 402, 438, 444, 536, 555, 584, 670, 730, 740, 804, 876, 888, 1005, 1095, 1110, 1340, 1460, 1480, 1608, 1752, 2010, 2190, 2220, 2479, 2680, 2701, 2920, 4020, 4380, 4440, 4891, 4958, 5402, 7437, 8040, 8103, 8760, 9782, 9916, 10804, 12395, 13505, 14673, 14874, 16206, 19564, 19832, 21608, 24455, 24790, 27010, 29346, 29748, 32412, 37185, 39128, 40515, 48910, 49580, 54020, 58692, 59496, 64824, 73365, 74370, 81030, 97820, 99160, 108040, 117384, 146730, 148740, 162060, 180967, 195640, 293460, 297480, 324120, 361934, 542901, 586920, 723868, 904835, 1085802, 1447736, 1809670, 2171604, 2714505, 3619340, 4343208, 5429010, 7238680, 10858020, 21716040]

約数ペア:

[(1, 21716040), (2, 10858020), (3, 7238680), (4, 5429010), (5, 4343208), (6, 3619340), (8, 2714505), (10, 2171604), (12, 1809670), (15, 1447736), (20, 1085802), (24, 904835), (30, 723868), (37, 586920), (40, 542901), (60, 361934), (67, 324120), (73, 297480), (74, 293460), (111, 195640), (120, 180967), (134, 162060), (146, 148740), (148, 146730), (185, 117384), (201, 108040), (219, 99160), (222, 97820), (268, 81030), (292, 74370), (296, 73365), (335, 64824), (365, 59496), (370, 58692), (402, 54020), (438, 49580), (444, 48910), (536, 40515), (555, 39128), (584, 37185), (670, 32412), (730, 29748), (740, 29346), (804, 27010), (876, 24790), (888, 24455), (1005, 21608), (1095, 19832), (1110, 19564), (1340, 16206), (1460, 14874), (1480, 14673), (1608, 13505), (1752, 12395), (2010, 10804), (2190, 9916), (2220, 9782), (2479, 8760), (2680, 8103), (2701, 8040), (2920, 7437), (4020, 5402), (4380, 4958), (4440, 4891)]