21147885

素因数分解:

$3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{101}}^1$

素因数の和:176

約数の個数: 80

約数和(自身を含む): 42653952

約数和(自身を除く): 21506067

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 47, 55, 81, 99, 101, 135, 141, 165, 235, 297, 303, 405, 423, 495, 505, 517, 705, 891, 909, 1111, 1269, 1485, 1515, 1551, 2115, 2585, 2727, 3333, 3807, 4455, 4545, 4653, 4747, 5555, 6345, 7755, 8181, 9999, 13635, 13959, 14241, 16665, 19035, 23265, 23735, 29997, 40905, 41877, 42723, 49995, 52217, 69795, 71205, 89991, 128169, 149985, 156651, 209385, 213615, 261085, 384507, 449955, 469953, 640845, 783255, 1409859, 1922535, 2349765, 4229577, 7049295, 21147885]

約数ペア:

[(1, 21147885), (3, 7049295), (5, 4229577), (9, 2349765), (11, 1922535), (15, 1409859), (27, 783255), (33, 640845), (45, 469953), (47, 449955), (55, 384507), (81, 261085), (99, 213615), (101, 209385), (135, 156651), (141, 149985), (165, 128169), (235, 89991), (297, 71205), (303, 69795), (405, 52217), (423, 49995), (495, 42723), (505, 41877), (517, 40905), (705, 29997), (891, 23735), (909, 23265), (1111, 19035), (1269, 16665), (1485, 14241), (1515, 13959), (1551, 13635), (2115, 9999), (2585, 8181), (2727, 7755), (3333, 6345), (3807, 5555), (4455, 4747), (4545, 4653)]