28287105

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1289}}^1$

素因数の和:1334

約数の個数: 64

約数和(自身を含む): 59443200

約数和(自身を除く): 31156095

約数列:

[1, 3, 5, 7, 11, 15, 19, 21, 33, 35, 55, 57, 77, 95, 105, 133, 165, 209, 231, 285, 385, 399, 627, 665, 1045, 1155, 1289, 1463, 1995, 3135, 3867, 4389, 6445, 7315, 9023, 14179, 19335, 21945, 24491, 27069, 42537, 45115, 70895, 73473, 99253, 122455, 135345, 171437, 212685, 269401, 297759, 367365, 496265, 514311, 808203, 857185, 1347005, 1488795, 1885807, 2571555, 4041015, 5657421, 9429035, 28287105]

約数ペア:

[(1, 28287105), (3, 9429035), (5, 5657421), (7, 4041015), (11, 2571555), (15, 1885807), (19, 1488795), (21, 1347005), (33, 857185), (35, 808203), (55, 514311), (57, 496265), (77, 367365), (95, 297759), (105, 269401), (133, 212685), (165, 171437), (209, 135345), (231, 122455), (285, 99253), (385, 73473), (399, 70895), (627, 45115), (665, 42537), (1045, 27069), (1155, 24491), (1289, 21945), (1463, 19335), (1995, 14179), (3135, 9023), (3867, 7315), (4389, 6445)]