15781020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{127}}^1$

素因数の和:267

約数の個数: 96

約数和(自身を含む): 47308800

約数和(自身を除く): 31527780

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 109, 114, 127, 190, 218, 228, 254, 285, 327, 380, 381, 436, 508, 545, 570, 635, 654, 762, 1090, 1140, 1270, 1308, 1524, 1635, 1905, 2071, 2180, 2413, 2540, 3270, 3810, 4142, 4826, 6213, 6540, 7239, 7620, 8284, 9652, 10355, 12065, 12426, 13843, 14478, 20710, 24130, 24852, 27686, 28956, 31065, 36195, 41420, 41529, 48260, 55372, 62130, 69215, 72390, 83058, 124260, 138430, 144780, 166116, 207645, 263017, 276860, 415290, 526034, 789051, 830580, 1052068, 1315085, 1578102, 2630170, 3156204, 3945255, 5260340, 7890510, 15781020]

約数ペア:

[(1, 15781020), (2, 7890510), (3, 5260340), (4, 3945255), (5, 3156204), (6, 2630170), (10, 1578102), (12, 1315085), (15, 1052068), (19, 830580), (20, 789051), (30, 526034), (38, 415290), (57, 276860), (60, 263017), (76, 207645), (95, 166116), (109, 144780), (114, 138430), (127, 124260), (190, 83058), (218, 72390), (228, 69215), (254, 62130), (285, 55372), (327, 48260), (380, 41529), (381, 41420), (436, 36195), (508, 31065), (545, 28956), (570, 27686), (635, 24852), (654, 24130), (762, 20710), (1090, 14478), (1140, 13843), (1270, 12426), (1308, 12065), (1524, 10355), (1635, 9652), (1905, 8284), (2071, 7620), (2180, 7239), (2413, 6540), (2540, 6213), (3270, 4826), (3810, 4142)]