19802580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{47149}}^1$

素因数の和:47168

約数の個数: 48

約数和(自身を含む): 63369600

約数和(自身を除く): 43567020

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, 47149, 94298, 141447, 188596, 235745, 282894, 330043, 471490, 565788, 660086, 707235, 942980, 990129, 1320172, 1414470, 1650215, 1980258, 2828940, 3300430, 3960516, 4950645, 6600860, 9901290, 19802580]

約数ペア:

[(1, 19802580), (2, 9901290), (3, 6600860), (4, 4950645), (5, 3960516), (6, 3300430), (7, 2828940), (10, 1980258), (12, 1650215), (14, 1414470), (15, 1320172), (20, 990129), (21, 942980), (28, 707235), (30, 660086), (35, 565788), (42, 471490), (60, 330043), (70, 282894), (84, 235745), (105, 188596), (140, 141447), (210, 94298), (420, 47149)]