20858460

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49663}}^1$

素因数の和:49682

約数の個数: 48

約数和(自身を含む): 66748416

約数和(自身を除く): 45889956

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, 49663, 99326, 148989, 198652, 248315, 297978, 347641, 496630, 595956, 695282, 744945, 993260, 1042923, 1390564, 1489890, 1738205, 2085846, 2979780, 3476410, 4171692, 5214615, 6952820, 10429230, 20858460]

約数ペア:

[(1, 20858460), (2, 10429230), (3, 6952820), (4, 5214615), (5, 4171692), (6, 3476410), (7, 2979780), (10, 2085846), (12, 1738205), (14, 1489890), (15, 1390564), (20, 1042923), (21, 993260), (28, 744945), (30, 695282), (35, 595956), (42, 496630), (60, 347641), (70, 297978), (84, 248315), (105, 198652), (140, 148989), (210, 99326), (420, 49663)]