20637100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{257}}^1$

素因数の和:355

約数の個数: 72

約数和(自身を含む): 49715568

約数和(自身を除く): 29078468

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 73, 100, 110, 146, 220, 257, 275, 292, 365, 514, 550, 730, 803, 1028, 1100, 1285, 1460, 1606, 1825, 2570, 2827, 3212, 3650, 4015, 5140, 5654, 6425, 7300, 8030, 11308, 12850, 14135, 16060, 18761, 20075, 25700, 28270, 37522, 40150, 56540, 70675, 75044, 80300, 93805, 141350, 187610, 206371, 282700, 375220, 412742, 469025, 825484, 938050, 1031855, 1876100, 2063710, 4127420, 5159275, 10318550, 20637100]

約数ペア:

[(1, 20637100), (2, 10318550), (4, 5159275), (5, 4127420), (10, 2063710), (11, 1876100), (20, 1031855), (22, 938050), (25, 825484), (44, 469025), (50, 412742), (55, 375220), (73, 282700), (100, 206371), (110, 187610), (146, 141350), (220, 93805), (257, 80300), (275, 75044), (292, 70675), (365, 56540), (514, 40150), (550, 37522), (730, 28270), (803, 25700), (1028, 20075), (1100, 18761), (1285, 16060), (1460, 14135), (1606, 12850), (1825, 11308), (2570, 8030), (2827, 7300), (3212, 6425), (3650, 5654), (4015, 5140)]