21963975

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{337}}^1$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 40235520

約数和(自身を除く): 18271545

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 79, 165, 237, 275, 337, 395, 825, 869, 1011, 1185, 1685, 1975, 2607, 3707, 4345, 5055, 5925, 8425, 11121, 13035, 18535, 21725, 25275, 26623, 55605, 65175, 79869, 92675, 133115, 278025, 292853, 399345, 665575, 878559, 1464265, 1996725, 4392795, 7321325, 21963975]

約数ペア:

[(1, 21963975), (3, 7321325), (5, 4392795), (11, 1996725), (15, 1464265), (25, 878559), (33, 665575), (55, 399345), (75, 292853), (79, 278025), (165, 133115), (237, 92675), (275, 79869), (337, 65175), (395, 55605), (825, 26623), (869, 25275), (1011, 21725), (1185, 18535), (1685, 13035), (1975, 11121), (2607, 8425), (3707, 5925), (4345, 5055)]