251463575

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{149}}^1$

素因数の和:225

約数の個数: 72

約数和(自身を含む): 382676400

約数和(自身を除く): 131212825

約数列:

[1, 5, 11, 17, 19, 25, 55, 85, 95, 149, 187, 209, 275, 323, 361, 425, 475, 745, 935, 1045, 1615, 1639, 1805, 2533, 2831, 3553, 3725, 3971, 4675, 5225, 6137, 8075, 8195, 9025, 12665, 14155, 17765, 19855, 27863, 30685, 31141, 40975, 48127, 53789, 63325, 67507, 70775, 88825, 99275, 139315, 153425, 155705, 240635, 268945, 337535, 529397, 591679, 696575, 778525, 914413, 1203175, 1344725, 1687675, 2646985, 2958395, 4572065, 10058543, 13234925, 14791975, 22860325, 50292715, 251463575]

約数ペア:

[(1, 251463575), (5, 50292715), (11, 22860325), (17, 14791975), (19, 13234925), (25, 10058543), (55, 4572065), (85, 2958395), (95, 2646985), (149, 1687675), (187, 1344725), (209, 1203175), (275, 914413), (323, 778525), (361, 696575), (425, 591679), (475, 529397), (745, 337535), (935, 268945), (1045, 240635), (1615, 155705), (1639, 153425), (1805, 139315), (2533, 99275), (2831, 88825), (3553, 70775), (3725, 67507), (3971, 63325), (4675, 53789), (5225, 48127), (6137, 40975), (8075, 31141), (8195, 30685), (9025, 27863), (12665, 19855), (14155, 17765)]