21365964

素因数分解:

$2^2\times 3^3\times {\mathrm{181}}^1\times {\mathrm{1093}}^1$

素因数の和:1287

約数の個数: 48

約数和(自身を含む): 55750240

約数和(自身を除く): 34384276

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 181, 362, 543, 724, 1086, 1093, 1629, 2172, 2186, 3258, 3279, 4372, 4887, 6516, 6558, 9774, 9837, 13116, 19548, 19674, 29511, 39348, 59022, 118044, 197833, 395666, 593499, 791332, 1186998, 1780497, 2373996, 3560994, 5341491, 7121988, 10682982, 21365964]

約数ペア:

[(1, 21365964), (2, 10682982), (3, 7121988), (4, 5341491), (6, 3560994), (9, 2373996), (12, 1780497), (18, 1186998), (27, 791332), (36, 593499), (54, 395666), (108, 197833), (181, 118044), (362, 59022), (543, 39348), (724, 29511), (1086, 19674), (1093, 19548), (1629, 13116), (2172, 9837), (2186, 9774), (3258, 6558), (3279, 6516), (4372, 4887)]