28866825

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:239

約数の個数: 72

約数和(自身を含む): 56871360

約数和(自身を除く): 28004535

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 71, 75, 117, 139, 195, 213, 225, 325, 355, 417, 585, 639, 695, 923, 975, 1065, 1251, 1775, 1807, 2085, 2769, 2925, 3195, 3475, 4615, 5325, 5421, 6255, 8307, 9035, 9869, 10425, 13845, 15975, 16263, 23075, 27105, 29607, 31275, 41535, 45175, 49345, 69225, 81315, 88821, 128297, 135525, 148035, 207675, 246725, 384891, 406575, 444105, 641485, 740175, 1154673, 1924455, 2220525, 3207425, 5773365, 9622275, 28866825]

約数ペア:

[(1, 28866825), (3, 9622275), (5, 5773365), (9, 3207425), (13, 2220525), (15, 1924455), (25, 1154673), (39, 740175), (45, 641485), (65, 444105), (71, 406575), (75, 384891), (117, 246725), (139, 207675), (195, 148035), (213, 135525), (225, 128297), (325, 88821), (355, 81315), (417, 69225), (585, 49345), (639, 45175), (695, 41535), (923, 31275), (975, 29607), (1065, 27105), (1251, 23075), (1775, 16263), (1807, 15975), (2085, 13845), (2769, 10425), (2925, 9869), (3195, 9035), (3475, 8307), (4615, 6255), (5325, 5421)]