21900417

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{839}}^1$

素因数の和:973

約数の個数: 32

約数和(自身を含む): 36771840

約数和(自身を除く): 14871423

約数列:

[1, 3, 7, 11, 21, 33, 77, 113, 231, 339, 791, 839, 1243, 2373, 2517, 3729, 5873, 8701, 9229, 17619, 26103, 27687, 64603, 94807, 193809, 284421, 663649, 1042877, 1990947, 3128631, 7300139, 21900417]

約数ペア:

[(1, 21900417), (3, 7300139), (7, 3128631), (11, 1990947), (21, 1042877), (33, 663649), (77, 284421), (113, 193809), (231, 94807), (339, 64603), (791, 27687), (839, 26103), (1243, 17619), (2373, 9229), (2517, 8701), (3729, 5873)]