19953716

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{41}}^1\times {\mathrm{421}}^1$

素因数の和:500

約数の個数: 36

約数和(自身を含む): 38088876

約数和(自身を除く): 18135160

約数列:

[1, 2, 4, 17, 34, 41, 68, 82, 164, 289, 421, 578, 697, 842, 1156, 1394, 1684, 2788, 7157, 11849, 14314, 17261, 23698, 28628, 34522, 47396, 69044, 121669, 243338, 293437, 486676, 586874, 1173748, 4988429, 9976858, 19953716]

約数ペア:

[(1, 19953716), (2, 9976858), (4, 4988429), (17, 1173748), (34, 586874), (41, 486676), (68, 293437), (82, 243338), (164, 121669), (289, 69044), (421, 47396), (578, 34522), (697, 28628), (842, 23698), (1156, 17261), (1394, 14314), (1684, 11849), (2788, 7157)]