28642215

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{293}}^1$

素因数の和:341

約数の個数: 64

約数和(自身を含む): 56448000

約数和(自身を除く): 27805785

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 49, 57, 95, 105, 133, 147, 245, 285, 293, 343, 399, 665, 735, 879, 931, 1029, 1465, 1715, 1995, 2051, 2793, 4395, 4655, 5145, 5567, 6153, 6517, 10255, 13965, 14357, 16701, 19551, 27835, 30765, 32585, 38969, 43071, 71785, 83505, 97755, 100499, 116907, 194845, 215355, 272783, 301497, 502495, 584535, 818349, 1363915, 1507485, 1909481, 4091745, 5728443, 9547405, 28642215]

約数ペア:

[(1, 28642215), (3, 9547405), (5, 5728443), (7, 4091745), (15, 1909481), (19, 1507485), (21, 1363915), (35, 818349), (49, 584535), (57, 502495), (95, 301497), (105, 272783), (133, 215355), (147, 194845), (245, 116907), (285, 100499), (293, 97755), (343, 83505), (399, 71785), (665, 43071), (735, 38969), (879, 32585), (931, 30765), (1029, 27835), (1465, 19551), (1715, 16701), (1995, 14357), (2051, 13965), (2793, 10255), (4395, 6517), (4655, 6153), (5145, 5567)]