18000387

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:217

約数の個数: 40

約数和(自身を含む): 28459200

約数和(自身を除く): 10458813

約数列:

[1, 3, 9, 27, 29, 79, 81, 87, 97, 237, 261, 291, 711, 783, 873, 2133, 2291, 2349, 2619, 2813, 6399, 6873, 7663, 7857, 8439, 20619, 22989, 25317, 61857, 68967, 75951, 185571, 206901, 222227, 227853, 620703, 666681, 2000043, 6000129, 18000387]

約数ペア:

[(1, 18000387), (3, 6000129), (9, 2000043), (27, 666681), (29, 620703), (79, 227853), (81, 222227), (87, 206901), (97, 185571), (237, 75951), (261, 68967), (291, 61857), (711, 25317), (783, 22989), (873, 20619), (2133, 8439), (2291, 7857), (2349, 7663), (2619, 6873), (2813, 6399)]