28178520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{727}}^1$

素因数の和:777

約数の個数: 128

約数和(自身を含む): 94348800

約数和(自身を除く): 66170280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 19, 20, 24, 30, 34, 38, 40, 51, 57, 60, 68, 76, 85, 95, 102, 114, 120, 136, 152, 170, 190, 204, 228, 255, 285, 323, 340, 380, 408, 456, 510, 570, 646, 680, 727, 760, 969, 1020, 1140, 1292, 1454, 1615, 1938, 2040, 2181, 2280, 2584, 2908, 3230, 3635, 3876, 4362, 4845, 5816, 6460, 7270, 7752, 8724, 9690, 10905, 12359, 12920, 13813, 14540, 17448, 19380, 21810, 24718, 27626, 29080, 37077, 38760, 41439, 43620, 49436, 55252, 61795, 69065, 74154, 82878, 87240, 98872, 110504, 123590, 138130, 148308, 165756, 185385, 207195, 234821, 247180, 276260, 296616, 331512, 370770, 414390, 469642, 494360, 552520, 704463, 741540, 828780, 939284, 1174105, 1408926, 1483080, 1657560, 1878568, 2348210, 2817852, 3522315, 4696420, 5635704, 7044630, 9392840, 14089260, 28178520]

約数ペア:

[(1, 28178520), (2, 14089260), (3, 9392840), (4, 7044630), (5, 5635704), (6, 4696420), (8, 3522315), (10, 2817852), (12, 2348210), (15, 1878568), (17, 1657560), (19, 1483080), (20, 1408926), (24, 1174105), (30, 939284), (34, 828780), (38, 741540), (40, 704463), (51, 552520), (57, 494360), (60, 469642), (68, 414390), (76, 370770), (85, 331512), (95, 296616), (102, 276260), (114, 247180), (120, 234821), (136, 207195), (152, 185385), (170, 165756), (190, 148308), (204, 138130), (228, 123590), (255, 110504), (285, 98872), (323, 87240), (340, 82878), (380, 74154), (408, 69065), (456, 61795), (510, 55252), (570, 49436), (646, 43620), (680, 41439), (727, 38760), (760, 37077), (969, 29080), (1020, 27626), (1140, 24718), (1292, 21810), (1454, 19380), (1615, 17448), (1938, 14540), (2040, 13813), (2181, 12920), (2280, 12359), (2584, 10905), (2908, 9690), (3230, 8724), (3635, 7752), (3876, 7270), (4362, 6460), (4845, 5816)]