18931545

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{331}}^1$

素因数の和:414

約数の個数: 48

約数和(自身を含む): 34804224

約数和(自身を除く): 15872679

約数列:

[1, 3, 5, 9, 15, 31, 41, 45, 93, 123, 155, 205, 279, 331, 369, 465, 615, 993, 1271, 1395, 1655, 1845, 2979, 3813, 4965, 6355, 10261, 11439, 13571, 14895, 19065, 30783, 40713, 51305, 57195, 67855, 92349, 122139, 153915, 203565, 420701, 461745, 610695, 1262103, 2103505, 3786309, 6310515, 18931545]

約数ペア:

[(1, 18931545), (3, 6310515), (5, 3786309), (9, 2103505), (15, 1262103), (31, 610695), (41, 461745), (45, 420701), (93, 203565), (123, 153915), (155, 122139), (205, 92349), (279, 67855), (331, 57195), (369, 51305), (465, 40713), (615, 30783), (993, 19065), (1271, 14895), (1395, 13571), (1655, 11439), (1845, 10261), (2979, 6355), (3813, 4965)]