21983409

素因数分解:

$3^2\times 7^2\times {\mathrm{79}}^1\times {\mathrm{631}}^1$

素因数の和:730

約数の個数: 36

約数和(自身を含む): 37464960

約数和(自身を除く): 15481551

約数列:

[1, 3, 7, 9, 21, 49, 63, 79, 147, 237, 441, 553, 631, 711, 1659, 1893, 3871, 4417, 4977, 5679, 11613, 13251, 30919, 34839, 39753, 49849, 92757, 149547, 278271, 348943, 448641, 1046829, 2442601, 3140487, 7327803, 21983409]

約数ペア:

[(1, 21983409), (3, 7327803), (7, 3140487), (9, 2442601), (21, 1046829), (49, 448641), (63, 348943), (79, 278271), (147, 149547), (237, 92757), (441, 49849), (553, 39753), (631, 34839), (711, 30919), (1659, 13251), (1893, 11613), (3871, 5679), (4417, 4977)]