21554128

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{1583}}^1$

素因数の和:1651

約数の個数: 40

約数和(自身を含む): 44782848

約数和(自身を除く): 23228720

約数列:

[1, 2, 4, 8, 16, 23, 37, 46, 74, 92, 148, 184, 296, 368, 592, 851, 1583, 1702, 3166, 3404, 6332, 6808, 12664, 13616, 25328, 36409, 58571, 72818, 117142, 145636, 234284, 291272, 468568, 582544, 937136, 1347133, 2694266, 5388532, 10777064, 21554128]

約数ペア:

[(1, 21554128), (2, 10777064), (4, 5388532), (8, 2694266), (16, 1347133), (23, 937136), (37, 582544), (46, 468568), (74, 291272), (92, 234284), (148, 145636), (184, 117142), (296, 72818), (368, 58571), (592, 36409), (851, 25328), (1583, 13616), (1702, 12664), (3166, 6808), (3404, 6332)]