19211647

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1$

素因数の和:247

約数の個数: 32

約数和(自身を含む): 25224192

約数和(自身を除く): 6012545

約数列:

[1, 7, 13, 23, 67, 91, 137, 161, 299, 469, 871, 959, 1541, 1781, 2093, 3151, 6097, 9179, 10787, 12467, 20033, 22057, 40963, 64253, 119327, 140231, 211117, 286741, 835289, 1477819, 2744521, 19211647]

約数ペア:

[(1, 19211647), (7, 2744521), (13, 1477819), (23, 835289), (67, 286741), (91, 211117), (137, 140231), (161, 119327), (299, 64253), (469, 40963), (871, 22057), (959, 20033), (1541, 12467), (1781, 10787), (2093, 9179), (3151, 6097)]