20391180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{577}}^1$

素因数の和:639

約数の個数: 96

約数和(自身を含む): 62146560

約数和(自身を除く): 41755380

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 31, 38, 57, 60, 62, 76, 93, 95, 114, 124, 155, 186, 190, 228, 285, 310, 372, 380, 465, 570, 577, 589, 620, 930, 1140, 1154, 1178, 1731, 1767, 1860, 2308, 2356, 2885, 2945, 3462, 3534, 5770, 5890, 6924, 7068, 8655, 8835, 10963, 11540, 11780, 17310, 17670, 17887, 21926, 32889, 34620, 35340, 35774, 43852, 53661, 54815, 65778, 71548, 89435, 107322, 109630, 131556, 164445, 178870, 214644, 219260, 268305, 328890, 339853, 357740, 536610, 657780, 679706, 1019559, 1073220, 1359412, 1699265, 2039118, 3398530, 4078236, 5097795, 6797060, 10195590, 20391180]

約数ペア:

[(1, 20391180), (2, 10195590), (3, 6797060), (4, 5097795), (5, 4078236), (6, 3398530), (10, 2039118), (12, 1699265), (15, 1359412), (19, 1073220), (20, 1019559), (30, 679706), (31, 657780), (38, 536610), (57, 357740), (60, 339853), (62, 328890), (76, 268305), (93, 219260), (95, 214644), (114, 178870), (124, 164445), (155, 131556), (186, 109630), (190, 107322), (228, 89435), (285, 71548), (310, 65778), (372, 54815), (380, 53661), (465, 43852), (570, 35774), (577, 35340), (589, 34620), (620, 32889), (930, 21926), (1140, 17887), (1154, 17670), (1178, 17310), (1731, 11780), (1767, 11540), (1860, 10963), (2308, 8835), (2356, 8655), (2885, 7068), (2945, 6924), (3462, 5890), (3534, 5770)]