21787890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1867}}^1$

素因数の和:2266

約数の個数: 32

約数和(自身を含む): 52453440

約数和(自身を除く): 30665550

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 389, 778, 1167, 1867, 1945, 2334, 3734, 3890, 5601, 5835, 9335, 11202, 11670, 18670, 28005, 56010, 726263, 1452526, 2178789, 3631315, 4357578, 7262630, 10893945, 21787890]

約数ペア:

[(1, 21787890), (2, 10893945), (3, 7262630), (5, 4357578), (6, 3631315), (10, 2178789), (15, 1452526), (30, 726263), (389, 56010), (778, 28005), (1167, 18670), (1867, 11670), (1945, 11202), (2334, 9335), (3734, 5835), (3890, 5601)]