18572820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{44221}}^1$

素因数の和:44240

約数の個数: 48

約数和(自身を含む): 59434368

約数和(自身を除く): 40861548

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 44221, 88442, 132663, 176884, 221105, 265326, 309547, 442210, 530652, 619094, 663315, 884420, 928641, 1238188, 1326630, 1547735, 1857282, 2653260, 3095470, 3714564, 4643205, 6190940, 9286410, 18572820]

約数ペア:

[(1, 18572820), (2, 9286410), (3, 6190940), (4, 4643205), (5, 3714564), (6, 3095470), (7, 2653260), (10, 1857282), (12, 1547735), (14, 1326630), (15, 1238188), (20, 928641), (21, 884420), (28, 663315), (30, 619094), (35, 530652), (42, 442210), (60, 309547), (70, 265326), (84, 221105), (105, 176884), (140, 132663), (210, 88442), (420, 44221)]