20540403

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{449}}^1$

素因数の和:508

約数の個数: 48

約数和(自身を含む): 35380800

約数和(自身を除く): 14840397

約数列:

[1, 3, 9, 13, 17, 23, 39, 51, 69, 117, 153, 207, 221, 299, 391, 449, 663, 897, 1173, 1347, 1989, 2691, 3519, 4041, 5083, 5837, 7633, 10327, 15249, 17511, 22899, 30981, 45747, 52533, 68697, 92943, 99229, 134251, 175559, 297687, 402753, 526677, 893061, 1208259, 1580031, 2282267, 6846801, 20540403]

約数ペア:

[(1, 20540403), (3, 6846801), (9, 2282267), (13, 1580031), (17, 1208259), (23, 893061), (39, 526677), (51, 402753), (69, 297687), (117, 175559), (153, 134251), (207, 99229), (221, 92943), (299, 68697), (391, 52533), (449, 45747), (663, 30981), (897, 22899), (1173, 17511), (1347, 15249), (1989, 10327), (2691, 7633), (3519, 5837), (4041, 5083)]