19968156929

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{181}}^1\times {\mathrm{193}}^1\times {\mathrm{2207}}^1$

素因数の和:2625

約数の個数: 32

約数和(自身を含む): 23699859456

約数和(自身を除く): 3731702527

約数列:

[1, 7, 37, 181, 193, 259, 1267, 1351, 2207, 6697, 7141, 15449, 34933, 46879, 49987, 81659, 244531, 399467, 425951, 571613, 1292521, 2796269, 2981657, 9047647, 14780279, 15760187, 77097131, 103461953, 110321309, 539679917, 2852593847, 19968156929]

約数ペア:

[(1, 19968156929), (7, 2852593847), (37, 539679917), (181, 110321309), (193, 103461953), (259, 77097131), (1267, 15760187), (1351, 14780279), (2207, 9047647), (6697, 2981657), (7141, 2796269), (15449, 1292521), (34933, 571613), (46879, 425951), (49987, 399467), (81659, 244531)]