20928880

素因数分解:

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

素因数の和:327

約数の個数: 120

約数和(自身を含む): 59795280

約数和(自身を除く): 38866400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 49, 56, 70, 76, 80, 95, 98, 112, 133, 140, 152, 190, 196, 245, 266, 280, 281, 304, 380, 392, 490, 532, 560, 562, 665, 760, 784, 931, 980, 1064, 1124, 1330, 1405, 1520, 1862, 1960, 1967, 2128, 2248, 2660, 2810, 3724, 3920, 3934, 4496, 4655, 5320, 5339, 5620, 7448, 7868, 9310, 9835, 10640, 10678, 11240, 13769, 14896, 15736, 18620, 19670, 21356, 22480, 26695, 27538, 31472, 37240, 37373, 39340, 42712, 53390, 55076, 68845, 74480, 74746, 78680, 85424, 106780, 110152, 137690, 149492, 157360, 186865, 213560, 220304, 261611, 275380, 298984, 373730, 427120, 523222, 550760, 597968, 747460, 1046444, 1101520, 1308055, 1494920, 2092888, 2616110, 2989840, 4185776, 5232220, 10464440, 20928880]

約数ペア:

[(1, 20928880), (2, 10464440), (4, 5232220), (5, 4185776), (7, 2989840), (8, 2616110), (10, 2092888), (14, 1494920), (16, 1308055), (19, 1101520), (20, 1046444), (28, 747460), (35, 597968), (38, 550760), (40, 523222), (49, 427120), (56, 373730), (70, 298984), (76, 275380), (80, 261611), (95, 220304), (98, 213560), (112, 186865), (133, 157360), (140, 149492), (152, 137690), (190, 110152), (196, 106780), (245, 85424), (266, 78680), (280, 74746), (281, 74480), (304, 68845), (380, 55076), (392, 53390), (490, 42712), (532, 39340), (560, 37373), (562, 37240), (665, 31472), (760, 27538), (784, 26695), (931, 22480), (980, 21356), (1064, 19670), (1124, 18620), (1330, 15736), (1405, 14896), (1520, 13769), (1862, 11240), (1960, 10678), (1967, 10640), (2128, 9835), (2248, 9310), (2660, 7868), (2810, 7448), (3724, 5620), (3920, 5339), (3934, 5320), (4496, 4655)]