21737145

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{503}}^1$

素因数の和:621

約数の個数: 32

約数和(自身を含む): 36191232

約数和(自身を除く): 14454087

約数列:

[1, 3, 5, 15, 43, 67, 129, 201, 215, 335, 503, 645, 1005, 1509, 2515, 2881, 7545, 8643, 14405, 21629, 33701, 43215, 64887, 101103, 108145, 168505, 324435, 505515, 1449143, 4347429, 7245715, 21737145]

約数ペア:

[(1, 21737145), (3, 7245715), (5, 4347429), (15, 1449143), (43, 505515), (67, 324435), (129, 168505), (201, 108145), (215, 101103), (335, 64887), (503, 43215), (645, 33701), (1005, 21629), (1509, 14405), (2515, 8643), (2881, 7545)]