261161383725

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{487}}^1\times {\mathrm{557}}^1$

素因数の和:1460

約数の個数: 144

約数和(自身を含む): 513576236160

約数和(自身を除く): 252414852435

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 165, 225, 275, 389, 487, 495, 557, 825, 1167, 1461, 1671, 1945, 2435, 2475, 2785, 3501, 4279, 4383, 5013, 5357, 5835, 6127, 7305, 8355, 9725, 12175, 12837, 13925, 16071, 17505, 18381, 21395, 21915, 25065, 26785, 29175, 30635, 36525, 38511, 41775, 48213, 55143, 64185, 80355, 87525, 91905, 106975, 109575, 125325, 133925, 153175, 189443, 192555, 216673, 241065, 271259, 275715, 320925, 401775, 459525, 568329, 650019, 813777, 947215, 962775, 1083365, 1205325, 1356295, 1378575, 1704987, 1950057, 2083873, 2383403, 2441331, 2841645, 2983849, 3250095, 4068885, 4736075, 5416825, 6251619, 6781475, 7150209, 8524935, 8951547, 9750285, 10419365, 11917015, 12206655, 14208225, 14919245, 16250475, 18754857, 20344425, 21450627, 26854641, 31258095, 35751045, 42624675, 44757735, 48751425, 52096825, 59585075, 61033275, 74596225, 93774285, 105519751, 107253135, 134273205, 156290475, 178755225, 223788675, 316559253, 468871425, 527598755, 536265675, 671366025, 949677759, 1160717261, 1582796265, 2637993775, 3482151783, 4748388795, 5803586305, 7913981325, 10446455349, 17410758915, 23741943975, 29017931525, 52232276745, 87053794575, 261161383725]

約数ペア:

[(1, 261161383725), (3, 87053794575), (5, 52232276745), (9, 29017931525), (11, 23741943975), (15, 17410758915), (25, 10446455349), (33, 7913981325), (45, 5803586305), (55, 4748388795), (75, 3482151783), (99, 2637993775), (165, 1582796265), (225, 1160717261), (275, 949677759), (389, 671366025), (487, 536265675), (495, 527598755), (557, 468871425), (825, 316559253), (1167, 223788675), (1461, 178755225), (1671, 156290475), (1945, 134273205), (2435, 107253135), (2475, 105519751), (2785, 93774285), (3501, 74596225), (4279, 61033275), (4383, 59585075), (5013, 52096825), (5357, 48751425), (5835, 44757735), (6127, 42624675), (7305, 35751045), (8355, 31258095), (9725, 26854641), (12175, 21450627), (12837, 20344425), (13925, 18754857), (16071, 16250475), (17505, 14919245), (18381, 14208225), (21395, 12206655), (21915, 11917015), (25065, 10419365), (26785, 9750285), (29175, 8951547), (30635, 8524935), (36525, 7150209), (38511, 6781475), (41775, 6251619), (48213, 5416825), (55143, 4736075), (64185, 4068885), (80355, 3250095), (87525, 2983849), (91905, 2841645), (106975, 2441331), (109575, 2383403), (125325, 2083873), (133925, 1950057), (153175, 1704987), (189443, 1378575), (192555, 1356295), (216673, 1205325), (241065, 1083365), (271259, 962775), (275715, 947215), (320925, 813777), (401775, 650019), (459525, 568329)]