68173940

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1\times {\mathrm{179}}^1$

素因数の和:464

約数の個数: 48

約数和(自身を含む): 146059200

約数和(自身を除く): 77885260

約数列:

[1, 2, 4, 5, 10, 20, 137, 139, 179, 274, 278, 358, 548, 556, 685, 695, 716, 895, 1370, 1390, 1790, 2740, 2780, 3580, 19043, 24523, 24881, 38086, 49046, 49762, 76172, 95215, 98092, 99524, 122615, 124405, 190430, 245230, 248810, 380860, 490460, 497620, 3408697, 6817394, 13634788, 17043485, 34086970, 68173940]

約数ペア:

[(1, 68173940), (2, 34086970), (4, 17043485), (5, 13634788), (10, 6817394), (20, 3408697), (137, 497620), (139, 490460), (179, 380860), (274, 248810), (278, 245230), (358, 190430), (548, 124405), (556, 122615), (685, 99524), (695, 98092), (716, 95215), (895, 76172), (1370, 49762), (1390, 49046), (1790, 38086), (2740, 24881), (2780, 24523), (3580, 19043)]