21865371

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{811}}^1$

素因数の和:887

約数の個数: 32

約数和(自身を含む): 34298880

約数和(自身を除く): 12433509

約数列:

[1, 3, 11, 19, 33, 43, 57, 129, 209, 473, 627, 811, 817, 1419, 2433, 2451, 8921, 8987, 15409, 26763, 26961, 34873, 46227, 104619, 169499, 383603, 508497, 662587, 1150809, 1987761, 7288457, 21865371]

約数ペア:

[(1, 21865371), (3, 7288457), (11, 1987761), (19, 1150809), (33, 662587), (43, 508497), (57, 383603), (129, 169499), (209, 104619), (473, 46227), (627, 34873), (811, 26961), (817, 26763), (1419, 15409), (2433, 8987), (2451, 8921)]