21127554

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{601}}^1$

素因数の和:653

約数の個数: 80

約数和(自身を含む): 55942656

約数和(自身を除く): 34815102

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 31, 42, 54, 62, 63, 81, 93, 126, 162, 186, 189, 217, 279, 378, 434, 558, 567, 601, 651, 837, 1134, 1202, 1302, 1674, 1803, 1953, 2511, 3606, 3906, 4207, 5022, 5409, 5859, 8414, 10818, 11718, 12621, 16227, 17577, 18631, 25242, 32454, 35154, 37262, 37863, 48681, 55893, 75726, 97362, 111786, 113589, 130417, 167679, 227178, 260834, 335358, 340767, 391251, 503037, 681534, 782502, 1006074, 1173753, 1509111, 2347506, 3018222, 3521259, 7042518, 10563777, 21127554]

約数ペア:

[(1, 21127554), (2, 10563777), (3, 7042518), (6, 3521259), (7, 3018222), (9, 2347506), (14, 1509111), (18, 1173753), (21, 1006074), (27, 782502), (31, 681534), (42, 503037), (54, 391251), (62, 340767), (63, 335358), (81, 260834), (93, 227178), (126, 167679), (162, 130417), (186, 113589), (189, 111786), (217, 97362), (279, 75726), (378, 55893), (434, 48681), (558, 37863), (567, 37262), (601, 35154), (651, 32454), (837, 25242), (1134, 18631), (1202, 17577), (1302, 16227), (1674, 12621), (1803, 11718), (1953, 10818), (2511, 8414), (3606, 5859), (3906, 5409), (4207, 5022)]