20833281

素因数分解:

$3^4\times 7^2\times {\mathrm{29}}^1\times {\mathrm{181}}^1$

素因数の和:236

約数の個数: 60

約数和(自身を含む): 37657620

約数和(自身を除く): 16824339

約数列:

[1, 3, 7, 9, 21, 27, 29, 49, 63, 81, 87, 147, 181, 189, 203, 261, 441, 543, 567, 609, 783, 1267, 1323, 1421, 1629, 1827, 2349, 3801, 3969, 4263, 4887, 5249, 5481, 8869, 11403, 12789, 14661, 15747, 16443, 26607, 34209, 36743, 38367, 47241, 79821, 102627, 110229, 115101, 141723, 239463, 257201, 330687, 425169, 718389, 771603, 992061, 2314809, 2976183, 6944427, 20833281]

約数ペア:

[(1, 20833281), (3, 6944427), (7, 2976183), (9, 2314809), (21, 992061), (27, 771603), (29, 718389), (49, 425169), (63, 330687), (81, 257201), (87, 239463), (147, 141723), (181, 115101), (189, 110229), (203, 102627), (261, 79821), (441, 47241), (543, 38367), (567, 36743), (609, 34209), (783, 26607), (1267, 16443), (1323, 15747), (1421, 14661), (1629, 12789), (1827, 11403), (2349, 8869), (3801, 5481), (3969, 5249), (4263, 4887)]