19666790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{809}}^1$

素因数の和:857

約数の個数: 64

約数和(自身を含む): 44089920

約数和(自身を除く): 24423130

約数列:

[1, 2, 5, 10, 11, 13, 17, 22, 26, 34, 55, 65, 85, 110, 130, 143, 170, 187, 221, 286, 374, 442, 715, 809, 935, 1105, 1430, 1618, 1870, 2210, 2431, 4045, 4862, 8090, 8899, 10517, 12155, 13753, 17798, 21034, 24310, 27506, 44495, 52585, 68765, 88990, 105170, 115687, 137530, 151283, 178789, 231374, 302566, 357578, 578435, 756415, 893945, 1156870, 1512830, 1787890, 1966679, 3933358, 9833395, 19666790]

約数ペア:

[(1, 19666790), (2, 9833395), (5, 3933358), (10, 1966679), (11, 1787890), (13, 1512830), (17, 1156870), (22, 893945), (26, 756415), (34, 578435), (55, 357578), (65, 302566), (85, 231374), (110, 178789), (130, 151283), (143, 137530), (170, 115687), (187, 105170), (221, 88990), (286, 68765), (374, 52585), (442, 44495), (715, 27506), (809, 24310), (935, 21034), (1105, 17798), (1430, 13753), (1618, 12155), (1870, 10517), (2210, 8899), (2431, 8090), (4045, 4862)]