221738120

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{57149}}^1$

素因数の和:57257

約数の個数: 32

約数和(自身を含む): 504063000

約数和(自身を除く): 282324880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 57149, 114298, 228596, 285745, 457192, 571490, 1142980, 2285960, 5543453, 11086906, 22173812, 27717265, 44347624, 55434530, 110869060, 221738120]

約数ペア:

[(1, 221738120), (2, 110869060), (4, 55434530), (5, 44347624), (8, 27717265), (10, 22173812), (20, 11086906), (40, 5543453), (97, 2285960), (194, 1142980), (388, 571490), (485, 457192), (776, 285745), (970, 228596), (1940, 114298), (3880, 57149)]