20005020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{15877}}^1$

素因数の和:15899

約数の個数: 72

約数和(自身を含む): 69355104

約数和(自身を除く): 49350084

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 15877, 31754, 47631, 63508, 79385, 95262, 111139, 142893, 158770, 190524, 222278, 238155, 285786, 317540, 333417, 444556, 476310, 555695, 571572, 666834, 714465, 952620, 1000251, 1111390, 1333668, 1428930, 1667085, 2000502, 2222780, 2857860, 3334170, 4001004, 5001255, 6668340, 10002510, 20005020]

約数ペア:

[(1, 20005020), (2, 10002510), (3, 6668340), (4, 5001255), (5, 4001004), (6, 3334170), (7, 2857860), (9, 2222780), (10, 2000502), (12, 1667085), (14, 1428930), (15, 1333668), (18, 1111390), (20, 1000251), (21, 952620), (28, 714465), (30, 666834), (35, 571572), (36, 555695), (42, 476310), (45, 444556), (60, 333417), (63, 317540), (70, 285786), (84, 238155), (90, 222278), (105, 190524), (126, 158770), (140, 142893), (180, 111139), (210, 95262), (252, 79385), (315, 63508), (420, 47631), (630, 31754), (1260, 15877)]