64166420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{1289}}^1$

素因数の和:1448

約数の個数: 48

約数和(自身を含む): 143035200

約数和(自身を除く): 78868780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 131, 190, 262, 380, 524, 655, 1289, 1310, 2489, 2578, 2620, 4978, 5156, 6445, 9956, 12445, 12890, 24491, 24890, 25780, 48982, 49780, 97964, 122455, 168859, 244910, 337718, 489820, 675436, 844295, 1688590, 3208321, 3377180, 6416642, 12833284, 16041605, 32083210, 64166420]

約数ペア:

[(1, 64166420), (2, 32083210), (4, 16041605), (5, 12833284), (10, 6416642), (19, 3377180), (20, 3208321), (38, 1688590), (76, 844295), (95, 675436), (131, 489820), (190, 337718), (262, 244910), (380, 168859), (524, 122455), (655, 97964), (1289, 49780), (1310, 48982), (2489, 25780), (2578, 24890), (2620, 24491), (4978, 12890), (5156, 12445), (6445, 9956)]