21666015

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{227}}^1$

素因数の和:349

約数の個数: 64

約数和(自身を含む): 44651520

約数和(自身を除く): 22985505

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 101, 105, 135, 189, 227, 303, 315, 505, 681, 707, 909, 945, 1135, 1515, 1589, 2043, 2121, 2727, 3405, 3535, 4545, 4767, 6129, 6363, 7945, 10215, 10605, 13635, 14301, 19089, 22927, 23835, 30645, 31815, 42903, 68781, 71505, 95445, 114635, 160489, 206343, 214515, 343905, 481467, 619029, 802445, 1031715, 1444401, 2407335, 3095145, 4333203, 7222005, 21666015]

約数ペア:

[(1, 21666015), (3, 7222005), (5, 4333203), (7, 3095145), (9, 2407335), (15, 1444401), (21, 1031715), (27, 802445), (35, 619029), (45, 481467), (63, 343905), (101, 214515), (105, 206343), (135, 160489), (189, 114635), (227, 95445), (303, 71505), (315, 68781), (505, 42903), (681, 31815), (707, 30645), (909, 23835), (945, 22927), (1135, 19089), (1515, 14301), (1589, 13635), (2043, 10605), (2121, 10215), (2727, 7945), (3405, 6363), (3535, 6129), (4545, 4767)]