321019725

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:132

約数の個数: 144

約数和(自身を含む): 639006720

約数和(自身を除く): 317986995

約数列:

[1, 3, 5, 13, 15, 19, 25, 31, 39, 43, 57, 65, 75, 93, 95, 129, 155, 169, 195, 215, 247, 285, 325, 403, 465, 475, 507, 559, 589, 645, 741, 775, 817, 845, 975, 1075, 1209, 1235, 1333, 1425, 1677, 1767, 2015, 2325, 2451, 2535, 2795, 2945, 3211, 3225, 3705, 3999, 4085, 4225, 5239, 6045, 6175, 6665, 7267, 7657, 8385, 8835, 9633, 10075, 10621, 12255, 12675, 13975, 14725, 15717, 16055, 17329, 18525, 19995, 20425, 21801, 22971, 25327, 26195, 30225, 31863, 33325, 36335, 38285, 41925, 44175, 48165, 51987, 53105, 61275, 75981, 78585, 80275, 86645, 99541, 99975, 109005, 114855, 126635, 130975, 138073, 159315, 181675, 191425, 225277, 240825, 259935, 265525, 298623, 329251, 379905, 392925, 414219, 433225, 497705, 545025, 574275, 633175, 675831, 690365, 796575, 987753, 1126385, 1299675, 1493115, 1646255, 1899525, 2071095, 2488525, 3379155, 3451825, 4280263, 4938765, 5631925, 7465575, 8231275, 10355475, 12840789, 16895775, 21401315, 24693825, 64203945, 107006575, 321019725]

約数ペア:

[(1, 321019725), (3, 107006575), (5, 64203945), (13, 24693825), (15, 21401315), (19, 16895775), (25, 12840789), (31, 10355475), (39, 8231275), (43, 7465575), (57, 5631925), (65, 4938765), (75, 4280263), (93, 3451825), (95, 3379155), (129, 2488525), (155, 2071095), (169, 1899525), (195, 1646255), (215, 1493115), (247, 1299675), (285, 1126385), (325, 987753), (403, 796575), (465, 690365), (475, 675831), (507, 633175), (559, 574275), (589, 545025), (645, 497705), (741, 433225), (775, 414219), (817, 392925), (845, 379905), (975, 329251), (1075, 298623), (1209, 265525), (1235, 259935), (1333, 240825), (1425, 225277), (1677, 191425), (1767, 181675), (2015, 159315), (2325, 138073), (2451, 130975), (2535, 126635), (2795, 114855), (2945, 109005), (3211, 99975), (3225, 99541), (3705, 86645), (3999, 80275), (4085, 78585), (4225, 75981), (5239, 61275), (6045, 53105), (6175, 51987), (6665, 48165), (7267, 44175), (7657, 41925), (8385, 38285), (8835, 36335), (9633, 33325), (10075, 31863), (10621, 30225), (12255, 26195), (12675, 25327), (13975, 22971), (14725, 21801), (15717, 20425), (16055, 19995), (17329, 18525)]