20403749015

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1297}}^1\times {\mathrm{5903}}^1$

素因数の和:7259

約数の個数: 32

約数和(自身を含む): 27036446976

約数和(自身を除く): 6632697961

約数列:

[1, 5, 13, 41, 65, 205, 533, 1297, 2665, 5903, 6485, 16861, 29515, 53177, 76739, 84305, 242023, 265885, 383695, 691301, 1210115, 3146299, 3456505, 7656191, 15731495, 38280955, 99530483, 313903831, 497652415, 1569519155, 4080749803, 20403749015]

約数ペア:

[(1, 20403749015), (5, 4080749803), (13, 1569519155), (41, 497652415), (65, 313903831), (205, 99530483), (533, 38280955), (1297, 15731495), (2665, 7656191), (5903, 3456505), (6485, 3146299), (16861, 1210115), (29515, 691301), (53177, 383695), (76739, 265885), (84305, 242023)]