21001887

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{1201}}^1$

素因数の和:1303

約数の個数: 24

約数和(自身を含む): 31877040

約数和(自身を除く): 10875153

約数列:

[1, 3, 9, 29, 67, 87, 201, 261, 603, 1201, 1943, 3603, 5829, 10809, 17487, 34829, 80467, 104487, 241401, 313461, 724203, 2333543, 7000629, 21001887]

約数ペア:

[(1, 21001887), (3, 7000629), (9, 2333543), (29, 724203), (67, 313461), (87, 241401), (201, 104487), (261, 80467), (603, 34829), (1201, 17487), (1943, 10809), (3603, 5829)]