20783724

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{461}}^1$

素因数の和:515

約数の個数: 72

約数和(自身を含む): 55598928

約数和(自身を除く): 34815204

約数列:

[1, 2, 3, 4, 6, 12, 13, 17, 26, 34, 39, 51, 52, 68, 78, 102, 156, 204, 221, 289, 442, 461, 578, 663, 867, 884, 922, 1156, 1326, 1383, 1734, 1844, 2652, 2766, 3468, 3757, 5532, 5993, 7514, 7837, 11271, 11986, 15028, 15674, 17979, 22542, 23511, 23972, 31348, 35958, 45084, 47022, 71916, 94044, 101881, 133229, 203762, 266458, 305643, 399687, 407524, 532916, 611286, 799374, 1222572, 1598748, 1731977, 3463954, 5195931, 6927908, 10391862, 20783724]

約数ペア:

[(1, 20783724), (2, 10391862), (3, 6927908), (4, 5195931), (6, 3463954), (12, 1731977), (13, 1598748), (17, 1222572), (26, 799374), (34, 611286), (39, 532916), (51, 407524), (52, 399687), (68, 305643), (78, 266458), (102, 203762), (156, 133229), (204, 101881), (221, 94044), (289, 71916), (442, 47022), (461, 45084), (578, 35958), (663, 31348), (867, 23972), (884, 23511), (922, 22542), (1156, 17979), (1326, 15674), (1383, 15028), (1734, 11986), (1844, 11271), (2652, 7837), (2766, 7514), (3468, 5993), (3757, 5532)]