20855009409

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{163}}^1\times {\mathrm{1091}}^1$

素因数の和:1398

約数の個数: 64

約数和(自身を含む): 31450718208

約数和(自身を除く): 10595708799

約数列:

[1, 3, 13, 31, 39, 93, 97, 163, 291, 403, 489, 1091, 1209, 1261, 2119, 3007, 3273, 3783, 5053, 6357, 9021, 14183, 15159, 15811, 33821, 39091, 42549, 47433, 65689, 101463, 105827, 117273, 177833, 197067, 205543, 317481, 439673, 490141, 533499, 616629, 1319019, 1375751, 1470423, 2311829, 3280637, 4127253, 5512823, 6371833, 6935487, 9841911, 16538469, 17249801, 19115499, 42648281, 51749403, 71666699, 127944843, 215000097, 224247413, 534743831, 672742239, 1604231493, 6951669803, 20855009409]

約数ペア:

[(1, 20855009409), (3, 6951669803), (13, 1604231493), (31, 672742239), (39, 534743831), (93, 224247413), (97, 215000097), (163, 127944843), (291, 71666699), (403, 51749403), (489, 42648281), (1091, 19115499), (1209, 17249801), (1261, 16538469), (2119, 9841911), (3007, 6935487), (3273, 6371833), (3783, 5512823), (5053, 4127253), (6357, 3280637), (9021, 2311829), (14183, 1470423), (15159, 1375751), (15811, 1319019), (33821, 616629), (39091, 533499), (42549, 490141), (47433, 439673), (65689, 317481), (101463, 205543), (105827, 197067), (117273, 177833)]