19944655

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{97}}^1$

素因数の和:219

約数の個数: 32

約数和(自身を含む): 26671680

約数和(自身を除く): 6727025

約数列:

[1, 5, 17, 41, 59, 85, 97, 205, 295, 485, 697, 1003, 1649, 2419, 3485, 3977, 5015, 5723, 8245, 12095, 19885, 28615, 41123, 67609, 97291, 205615, 234643, 338045, 486455, 1173215, 3988931, 19944655]

約数ペア:

[(1, 19944655), (5, 3988931), (17, 1173215), (41, 486455), (59, 338045), (85, 234643), (97, 205615), (205, 97291), (295, 67609), (485, 41123), (697, 28615), (1003, 19885), (1649, 12095), (2419, 8245), (3485, 5723), (3977, 5015)]