21091957491

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{263}}^1\times {\mathrm{1783}}^1$

素因数の和:2136

約数の個数: 64

約数和(自身を含む): 32553861120

約数和(自身を除く): 11461903629

約数列:

[1, 3, 11, 29, 33, 47, 87, 141, 263, 319, 517, 789, 957, 1363, 1551, 1783, 2893, 4089, 5349, 7627, 8679, 12361, 14993, 19613, 22881, 37083, 44979, 51707, 58839, 83801, 83897, 135971, 155121, 251403, 251691, 358469, 407913, 468929, 568777, 921811, 1075407, 1406787, 1706331, 2430229, 2765433, 3943159, 5158219, 7290687, 11829477, 13598941, 15474657, 22039663, 26732519, 40796823, 66118989, 80197557, 149588351, 242436293, 448765053, 639150227, 727308879, 1917450681, 7030652497, 21091957491]

約数ペア:

[(1, 21091957491), (3, 7030652497), (11, 1917450681), (29, 727308879), (33, 639150227), (47, 448765053), (87, 242436293), (141, 149588351), (263, 80197557), (319, 66118989), (517, 40796823), (789, 26732519), (957, 22039663), (1363, 15474657), (1551, 13598941), (1783, 11829477), (2893, 7290687), (4089, 5158219), (5349, 3943159), (7627, 2765433), (8679, 2430229), (12361, 1706331), (14993, 1406787), (19613, 1075407), (22881, 921811), (37083, 568777), (44979, 468929), (51707, 407913), (58839, 358469), (83801, 251691), (83897, 251403), (135971, 155121)]