21308580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{5147}}^1$

素因数の和:5185

約数の個数: 72

約数和(自身を含む): 67459392

約数和(自身を除く): 46150812

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140, 5147, 10294, 15441, 20588, 25735, 30882, 46323, 51470, 61764, 77205, 92646, 102940, 118381, 154410, 185292, 231615, 236762, 308820, 355143, 463230, 473524, 591905, 710286, 926460, 1065429, 1183810, 1420572, 1775715, 2130858, 2367620, 3551430, 4261716, 5327145, 7102860, 10654290, 21308580]

約数ペア:

[(1, 21308580), (2, 10654290), (3, 7102860), (4, 5327145), (5, 4261716), (6, 3551430), (9, 2367620), (10, 2130858), (12, 1775715), (15, 1420572), (18, 1183810), (20, 1065429), (23, 926460), (30, 710286), (36, 591905), (45, 473524), (46, 463230), (60, 355143), (69, 308820), (90, 236762), (92, 231615), (115, 185292), (138, 154410), (180, 118381), (207, 102940), (230, 92646), (276, 77205), (345, 61764), (414, 51470), (460, 46323), (690, 30882), (828, 25735), (1035, 20588), (1380, 15441), (2070, 10294), (4140, 5147)]