20213986

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1$

素因数の和:163

約数の個数: 64

約数和(自身を含む): 38102400

約数和(自身を除く): 17888414

約数列:

[1, 2, 13, 17, 19, 26, 29, 34, 38, 58, 83, 166, 221, 247, 323, 377, 442, 493, 494, 551, 646, 754, 986, 1079, 1102, 1411, 1577, 2158, 2407, 2822, 3154, 4199, 4814, 6409, 7163, 8398, 9367, 12818, 14326, 18343, 18734, 20501, 26809, 31291, 36686, 40919, 41002, 45733, 53618, 62582, 81838, 91466, 121771, 243542, 348517, 531947, 594529, 697034, 777461, 1063894, 1189058, 1554922, 10106993, 20213986]

約数ペア:

[(1, 20213986), (2, 10106993), (13, 1554922), (17, 1189058), (19, 1063894), (26, 777461), (29, 697034), (34, 594529), (38, 531947), (58, 348517), (83, 243542), (166, 121771), (221, 91466), (247, 81838), (323, 62582), (377, 53618), (442, 45733), (493, 41002), (494, 40919), (551, 36686), (646, 31291), (754, 26809), (986, 20501), (1079, 18734), (1102, 18343), (1411, 14326), (1577, 12818), (2158, 9367), (2407, 8398), (2822, 7163), (3154, 6409), (4199, 4814)]