20428373

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:197

約数の個数: 32

約数和(自身を含む): 26127360

約数和(自身を除く): 5698987

約数列:

[1, 7, 17, 41, 53, 79, 119, 287, 371, 553, 697, 901, 1343, 2173, 3239, 4187, 4879, 6307, 9401, 15211, 22673, 29309, 36941, 55063, 71179, 171667, 258587, 385441, 498253, 1201669, 2918339, 20428373]

約数ペア:

[(1, 20428373), (7, 2918339), (17, 1201669), (41, 498253), (53, 385441), (79, 258587), (119, 171667), (287, 71179), (371, 55063), (553, 36941), (697, 29309), (901, 22673), (1343, 15211), (2173, 9401), (3239, 6307), (4187, 4879)]