15315209

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:201

約数の個数: 32

約数和(自身を含む): 19998720

約数和(自身を除く): 4683511

約数列:

[1, 7, 13, 31, 61, 89, 91, 217, 403, 427, 623, 793, 1157, 1891, 2759, 2821, 5429, 5551, 8099, 13237, 19313, 24583, 35867, 38003, 70577, 168299, 172081, 251069, 494039, 1178093, 2187887, 15315209]

約数ペア:

[(1, 15315209), (7, 2187887), (13, 1178093), (31, 494039), (61, 251069), (89, 172081), (91, 168299), (217, 70577), (403, 38003), (427, 35867), (623, 24583), (793, 19313), (1157, 13237), (1891, 8099), (2759, 5551), (2821, 5429)]