20730780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16453}}^1$

素因数の和:16475

約数の個数: 72

約数和(自身を含む): 71871072

約数和(自身を除く): 51140292

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16453, 32906, 49359, 65812, 82265, 98718, 115171, 148077, 164530, 197436, 230342, 246795, 296154, 329060, 345513, 460684, 493590, 575855, 592308, 691026, 740385, 987180, 1036539, 1151710, 1382052, 1480770, 1727565, 2073078, 2303420, 2961540, 3455130, 4146156, 5182695, 6910260, 10365390, 20730780]

約数ペア:

[(1, 20730780), (2, 10365390), (3, 6910260), (4, 5182695), (5, 4146156), (6, 3455130), (7, 2961540), (9, 2303420), (10, 2073078), (12, 1727565), (14, 1480770), (15, 1382052), (18, 1151710), (20, 1036539), (21, 987180), (28, 740385), (30, 691026), (35, 592308), (36, 575855), (42, 493590), (45, 460684), (60, 345513), (63, 329060), (70, 296154), (84, 246795), (90, 230342), (105, 197436), (126, 164530), (140, 148077), (180, 115171), (210, 98718), (252, 82265), (315, 65812), (420, 49359), (630, 32906), (1260, 16453)]