20365587

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{401}}^1$

素因数の和:446

約数の個数: 48

約数和(自身を含む): 35118720

約数和(自身を除く): 14753133

約数列:

[1, 3, 9, 11, 19, 27, 33, 57, 81, 99, 171, 209, 243, 297, 401, 513, 627, 891, 1203, 1539, 1881, 2673, 3609, 4411, 4617, 5643, 7619, 10827, 13233, 16929, 22857, 32481, 39699, 50787, 68571, 83809, 97443, 119097, 205713, 251427, 357291, 617139, 754281, 1071873, 1851417, 2262843, 6788529, 20365587]

約数ペア:

[(1, 20365587), (3, 6788529), (9, 2262843), (11, 1851417), (19, 1071873), (27, 754281), (33, 617139), (57, 357291), (81, 251427), (99, 205713), (171, 119097), (209, 97443), (243, 83809), (297, 68571), (401, 50787), (513, 39699), (627, 32481), (891, 22857), (1203, 16929), (1539, 13233), (1881, 10827), (2673, 7619), (3609, 5643), (4411, 4617)]