2021693840

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{281}}^1\times {\mathrm{647}}^1$

素因数の和:1080

約数の個数: 80

約数和(自身を含む): 4758445440

約数和(自身を除く): 2736751600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 281, 556, 562, 647, 695, 1112, 1124, 1294, 1390, 1405, 2224, 2248, 2588, 2780, 2810, 3235, 4496, 5176, 5560, 5620, 6470, 10352, 11120, 11240, 12940, 22480, 25880, 39059, 51760, 78118, 89933, 156236, 179866, 181807, 195295, 312472, 359732, 363614, 390590, 449665, 624944, 719464, 727228, 781180, 899330, 909035, 1438928, 1454456, 1562360, 1798660, 1818070, 2908912, 3124720, 3597320, 3636140, 7194640, 7272280, 14544560, 25271173, 50542346, 101084692, 126355865, 202169384, 252711730, 404338768, 505423460, 1010846920, 2021693840]

約数ペア:

[(1, 2021693840), (2, 1010846920), (4, 505423460), (5, 404338768), (8, 252711730), (10, 202169384), (16, 126355865), (20, 101084692), (40, 50542346), (80, 25271173), (139, 14544560), (278, 7272280), (281, 7194640), (556, 3636140), (562, 3597320), (647, 3124720), (695, 2908912), (1112, 1818070), (1124, 1798660), (1294, 1562360), (1390, 1454456), (1405, 1438928), (2224, 909035), (2248, 899330), (2588, 781180), (2780, 727228), (2810, 719464), (3235, 624944), (4496, 449665), (5176, 390590), (5560, 363614), (5620, 359732), (6470, 312472), (10352, 195295), (11120, 181807), (11240, 179866), (12940, 156236), (22480, 89933), (25880, 78118), (39059, 51760)]