21586149

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{691}}^1$

素因数の和:802

約数の個数: 32

約数和(自身を含む): 34876800

約数和(自身を除く): 13290651

約数列:

[1, 3, 9, 13, 27, 39, 89, 117, 267, 351, 691, 801, 1157, 2073, 2403, 3471, 6219, 8983, 10413, 18657, 26949, 31239, 61499, 80847, 184497, 242541, 553491, 799487, 1660473, 2398461, 7195383, 21586149]

約数ペア:

[(1, 21586149), (3, 7195383), (9, 2398461), (13, 1660473), (27, 799487), (39, 553491), (89, 242541), (117, 184497), (267, 80847), (351, 61499), (691, 31239), (801, 26949), (1157, 18657), (2073, 10413), (2403, 8983), (3471, 6219)]