2989840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{281}}^1$

素因数の和:320

約数の個数: 80

約数和(自身を含む): 8392320

約数和(自身を除く): 5402480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 56, 70, 76, 80, 95, 112, 133, 140, 152, 190, 266, 280, 281, 304, 380, 532, 560, 562, 665, 760, 1064, 1124, 1330, 1405, 1520, 1967, 2128, 2248, 2660, 2810, 3934, 4496, 5320, 5339, 5620, 7868, 9835, 10640, 10678, 11240, 15736, 19670, 21356, 22480, 26695, 31472, 37373, 39340, 42712, 53390, 74746, 78680, 85424, 106780, 149492, 157360, 186865, 213560, 298984, 373730, 427120, 597968, 747460, 1494920, 2989840]

約数ペア:

[(1, 2989840), (2, 1494920), (4, 747460), (5, 597968), (7, 427120), (8, 373730), (10, 298984), (14, 213560), (16, 186865), (19, 157360), (20, 149492), (28, 106780), (35, 85424), (38, 78680), (40, 74746), (56, 53390), (70, 42712), (76, 39340), (80, 37373), (95, 31472), (112, 26695), (133, 22480), (140, 21356), (152, 19670), (190, 15736), (266, 11240), (280, 10678), (281, 10640), (304, 9835), (380, 7868), (532, 5620), (560, 5339), (562, 5320), (665, 4496), (760, 3934), (1064, 2810), (1124, 2660), (1330, 2248), (1405, 2128), (1520, 1967)]