21213272

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{2083}}^1$

素因数の和:2175

約数の個数: 32

約数和(自身を含む): 42513600

約数和(自身を除く): 21300328

約数列:

[1, 2, 4, 8, 19, 38, 67, 76, 134, 152, 268, 536, 1273, 2083, 2546, 4166, 5092, 8332, 10184, 16664, 39577, 79154, 139561, 158308, 279122, 316616, 558244, 1116488, 2651659, 5303318, 10606636, 21213272]

約数ペア:

[(1, 21213272), (2, 10606636), (4, 5303318), (8, 2651659), (19, 1116488), (38, 558244), (67, 316616), (76, 279122), (134, 158308), (152, 139561), (268, 79154), (536, 39577), (1273, 16664), (2083, 10184), (2546, 8332), (4166, 5092)]