398142719

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{179}}^1$

素因数の和:431

約数の個数: 32

約数和(自身を含む): 463034880

約数和(自身を除く): 64892161

約数列:

[1, 13, 23, 43, 173, 179, 299, 559, 989, 2249, 2327, 3979, 4117, 7439, 7697, 12857, 30967, 51727, 53521, 96707, 100061, 171097, 177031, 402571, 712241, 1331581, 2224261, 2301403, 9259133, 17310553, 30626363, 398142719]

約数ペア:

[(1, 398142719), (13, 30626363), (23, 17310553), (43, 9259133), (173, 2301403), (179, 2224261), (299, 1331581), (559, 712241), (989, 402571), (2249, 177031), (2327, 171097), (3979, 100061), (4117, 96707), (7439, 53521), (7697, 51727), (12857, 30967)]