20731657180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{271}}^1\times {\mathrm{4987}}^1$

素因数の和:5339

約数の個数: 96

約数和(自身を含む): 47865646080

約数和(自身を除く): 27133988900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 59, 65, 118, 130, 236, 260, 271, 295, 542, 590, 767, 1084, 1180, 1355, 1534, 2710, 3068, 3523, 3835, 4987, 5420, 7046, 7670, 9974, 14092, 15340, 15989, 17615, 19948, 24935, 31978, 35230, 49870, 63956, 64831, 70460, 79945, 99740, 129662, 159890, 207857, 259324, 294233, 319780, 324155, 415714, 588466, 648310, 831428, 1039285, 1176932, 1296620, 1351477, 1471165, 2078570, 2702954, 2942330, 3825029, 4157140, 5405908, 5884660, 6757385, 7650058, 13514770, 15300116, 17569201, 19125145, 27029540, 35138402, 38250290, 70276804, 76500580, 79737143, 87846005, 159474286, 175692010, 318948572, 351384020, 398685715, 797371430, 1036582859, 1594742860, 2073165718, 4146331436, 5182914295, 10365828590, 20731657180]

約数ペア:

[(1, 20731657180), (2, 10365828590), (4, 5182914295), (5, 4146331436), (10, 2073165718), (13, 1594742860), (20, 1036582859), (26, 797371430), (52, 398685715), (59, 351384020), (65, 318948572), (118, 175692010), (130, 159474286), (236, 87846005), (260, 79737143), (271, 76500580), (295, 70276804), (542, 38250290), (590, 35138402), (767, 27029540), (1084, 19125145), (1180, 17569201), (1355, 15300116), (1534, 13514770), (2710, 7650058), (3068, 6757385), (3523, 5884660), (3835, 5405908), (4987, 4157140), (5420, 3825029), (7046, 2942330), (7670, 2702954), (9974, 2078570), (14092, 1471165), (15340, 1351477), (15989, 1296620), (17615, 1176932), (19948, 1039285), (24935, 831428), (31978, 648310), (35230, 588466), (49870, 415714), (63956, 324155), (64831, 319780), (70460, 294233), (79945, 259324), (99740, 207857), (129662, 159890)]