18311020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{10061}}^1$

素因数の和:10090

約数の個数: 48

約数和(自身を含む): 47331648

約数和(自身を除く): 29020628

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 10061, 20122, 40244, 50305, 70427, 100610, 130793, 140854, 201220, 261586, 281708, 352135, 523172, 653965, 704270, 915551, 1307930, 1408540, 1831102, 2615860, 3662204, 4577755, 9155510, 18311020]

約数ペア:

[(1, 18311020), (2, 9155510), (4, 4577755), (5, 3662204), (7, 2615860), (10, 1831102), (13, 1408540), (14, 1307930), (20, 915551), (26, 704270), (28, 653965), (35, 523172), (52, 352135), (65, 281708), (70, 261586), (91, 201220), (130, 140854), (140, 130793), (182, 100610), (260, 70427), (364, 50305), (455, 40244), (910, 20122), (1820, 10061)]