20858355

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{2879}}^1$

素因数の和:2920

約数の個数: 48

約数和(自身を含む): 43130880

約数和(自身を除く): 22272525

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 35, 45, 63, 69, 105, 115, 161, 207, 315, 345, 483, 805, 1035, 1449, 2415, 2879, 7245, 8637, 14395, 20153, 25911, 43185, 60459, 66217, 100765, 129555, 181377, 198651, 302295, 331085, 463519, 595953, 906885, 993255, 1390557, 2317595, 2979765, 4171671, 6952785, 20858355]

約数ペア:

[(1, 20858355), (3, 6952785), (5, 4171671), (7, 2979765), (9, 2317595), (15, 1390557), (21, 993255), (23, 906885), (35, 595953), (45, 463519), (63, 331085), (69, 302295), (105, 198651), (115, 181377), (161, 129555), (207, 100765), (315, 66217), (345, 60459), (483, 43185), (805, 25911), (1035, 20153), (1449, 14395), (2415, 8637), (2879, 7245)]