21409592

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{659}}^1$

素因数の和:827

約数の個数: 32

約数和(自身を含む): 41817600

約数和(自身を除く): 20408008

約数列:

[1, 2, 4, 8, 31, 62, 124, 131, 248, 262, 524, 659, 1048, 1318, 2636, 4061, 5272, 8122, 16244, 20429, 32488, 40858, 81716, 86329, 163432, 172658, 345316, 690632, 2676199, 5352398, 10704796, 21409592]

約数ペア:

[(1, 21409592), (2, 10704796), (4, 5352398), (8, 2676199), (31, 690632), (62, 345316), (124, 172658), (131, 163432), (248, 86329), (262, 81716), (524, 40858), (659, 32488), (1048, 20429), (1318, 16244), (2636, 8122), (4061, 5272)]