21000296985

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{659}}^1\times {\mathrm{68531}}^1$

素因数の和:69229

約数の個数: 32

約数和(自身を含む): 34737500160

約数和(自身を除く): 13737203175

約数列:

[1, 3, 5, 15, 31, 93, 155, 465, 659, 1977, 3295, 9885, 20429, 61287, 68531, 102145, 205593, 306435, 342655, 1027965, 2124461, 6373383, 10622305, 31866915, 45161929, 135485787, 225809645, 677428935, 1400019799, 4200059397, 7000098995, 21000296985]

約数ペア:

[(1, 21000296985), (3, 7000098995), (5, 4200059397), (15, 1400019799), (31, 677428935), (93, 225809645), (155, 135485787), (465, 45161929), (659, 31866915), (1977, 10622305), (3295, 6373383), (9885, 2124461), (20429, 1027965), (61287, 342655), (68531, 306435), (102145, 205593)]