20578545

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1213}}^1$

素因数の和:1266

約数の個数: 48

約数和(自身を含む): 39770640

約数和(自身を除く): 19192095

約数列:

[1, 3, 5, 9, 13, 15, 29, 39, 45, 65, 87, 117, 145, 195, 261, 377, 435, 585, 1131, 1213, 1305, 1885, 3393, 3639, 5655, 6065, 10917, 15769, 16965, 18195, 35177, 47307, 54585, 78845, 105531, 141921, 175885, 236535, 316593, 457301, 527655, 709605, 1371903, 1582965, 2286505, 4115709, 6859515, 20578545]

約数ペア:

[(1, 20578545), (3, 6859515), (5, 4115709), (9, 2286505), (13, 1582965), (15, 1371903), (29, 709605), (39, 527655), (45, 457301), (65, 316593), (87, 236535), (117, 175885), (145, 141921), (195, 105531), (261, 78845), (377, 54585), (435, 47307), (585, 35177), (1131, 18195), (1213, 16965), (1305, 15769), (1885, 10917), (3393, 6065), (3639, 5655)]