18943245

素因数分解:

$3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1$

素因数の和:242

約数の個数: 48

約数和(自身を含む): 34200192

約数和(自身を除く): 15256947

約数列:

[1, 3, 5, 9, 15, 45, 61, 67, 103, 183, 201, 305, 309, 335, 515, 549, 603, 915, 927, 1005, 1545, 2745, 3015, 4087, 4635, 6283, 6901, 12261, 18849, 20435, 20703, 31415, 34505, 36783, 56547, 61305, 62109, 94245, 103515, 183915, 282735, 310545, 420961, 1262883, 2104805, 3788649, 6314415, 18943245]

約数ペア:

[(1, 18943245), (3, 6314415), (5, 3788649), (9, 2104805), (15, 1262883), (45, 420961), (61, 310545), (67, 282735), (103, 183915), (183, 103515), (201, 94245), (305, 62109), (309, 61305), (335, 56547), (515, 36783), (549, 34505), (603, 31415), (915, 20703), (927, 20435), (1005, 18849), (1545, 12261), (2745, 6901), (3015, 6283), (4087, 4635)]