21373495

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{179}}^1$

素因数の和:375

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 9108425

約数列:

[1, 5, 11, 13, 55, 65, 143, 167, 179, 715, 835, 895, 1837, 1969, 2171, 2327, 9185, 9845, 10855, 11635, 23881, 25597, 29893, 119405, 127985, 149465, 328823, 388609, 1644115, 1943045, 4274699, 21373495]

約数ペア:

[(1, 21373495), (5, 4274699), (11, 1943045), (13, 1644115), (55, 388609), (65, 328823), (143, 149465), (167, 127985), (179, 119405), (715, 29893), (835, 25597), (895, 23881), (1837, 11635), (1969, 10855), (2171, 9845), (2327, 9185)]