20178230740

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^2\times {\mathrm{43}}^1\times {\mathrm{1213}}^1$

素因数の和:1346

約数の個数: 144

約数和(自身を含む): 46897538688

約数和(自身を除く): 26719307948

約数列:

[1, 2, 4, 5, 10, 20, 23, 29, 43, 46, 58, 86, 92, 115, 116, 145, 172, 215, 230, 290, 430, 460, 580, 667, 841, 860, 989, 1213, 1247, 1334, 1682, 1978, 2426, 2494, 2668, 3335, 3364, 3956, 4205, 4852, 4945, 4988, 6065, 6235, 6670, 8410, 9890, 12130, 12470, 13340, 16820, 19343, 19780, 24260, 24940, 27899, 28681, 35177, 36163, 38686, 52159, 55798, 57362, 70354, 72326, 77372, 96715, 104318, 111596, 114724, 139495, 140708, 143405, 144652, 175885, 180815, 193430, 208636, 260795, 278990, 286810, 351770, 361630, 386860, 521590, 557980, 573620, 703540, 723260, 809071, 831749, 1020133, 1043180, 1199657, 1512611, 1618142, 1663498, 2040266, 2399314, 3025222, 3236284, 3326996, 4045355, 4080532, 4158745, 4798628, 5100665, 5998285, 6050444, 7563055, 8090710, 8317490, 10201330, 11996570, 15126110, 16181420, 16634980, 20402660, 23463059, 23993140, 30252220, 34790053, 43865719, 46926118, 69580106, 87731438, 93852236, 117315295, 139160212, 173950265, 175462876, 219328595, 234630590, 347900530, 438657190, 469261180, 695801060, 877314380, 1008911537, 2017823074, 4035646148, 5044557685, 10089115370, 20178230740]

約数ペア:

[(1, 20178230740), (2, 10089115370), (4, 5044557685), (5, 4035646148), (10, 2017823074), (20, 1008911537), (23, 877314380), (29, 695801060), (43, 469261180), (46, 438657190), (58, 347900530), (86, 234630590), (92, 219328595), (115, 175462876), (116, 173950265), (145, 139160212), (172, 117315295), (215, 93852236), (230, 87731438), (290, 69580106), (430, 46926118), (460, 43865719), (580, 34790053), (667, 30252220), (841, 23993140), (860, 23463059), (989, 20402660), (1213, 16634980), (1247, 16181420), (1334, 15126110), (1682, 11996570), (1978, 10201330), (2426, 8317490), (2494, 8090710), (2668, 7563055), (3335, 6050444), (3364, 5998285), (3956, 5100665), (4205, 4798628), (4852, 4158745), (4945, 4080532), (4988, 4045355), (6065, 3326996), (6235, 3236284), (6670, 3025222), (8410, 2399314), (9890, 2040266), (12130, 1663498), (12470, 1618142), (13340, 1512611), (16820, 1199657), (19343, 1043180), (19780, 1020133), (24260, 831749), (24940, 809071), (27899, 723260), (28681, 703540), (35177, 573620), (36163, 557980), (38686, 521590), (52159, 386860), (55798, 361630), (57362, 351770), (70354, 286810), (72326, 278990), (77372, 260795), (96715, 208636), (104318, 193430), (111596, 180815), (114724, 175885), (139495, 144652), (140708, 143405)]