19806780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{6737}}^1$

素因数の和:6763

約数の個数: 72

約数和(自身を含む): 64523088

約数和(自身を除く): 44716308

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 6737, 13474, 20211, 26948, 33685, 40422, 47159, 67370, 80844, 94318, 101055, 134740, 141477, 188636, 202110, 235795, 282954, 330113, 404220, 471590, 565908, 660226, 707385, 943180, 990339, 1320452, 1414770, 1650565, 1980678, 2829540, 3301130, 3961356, 4951695, 6602260, 9903390, 19806780]

約数ペア:

[(1, 19806780), (2, 9903390), (3, 6602260), (4, 4951695), (5, 3961356), (6, 3301130), (7, 2829540), (10, 1980678), (12, 1650565), (14, 1414770), (15, 1320452), (20, 990339), (21, 943180), (28, 707385), (30, 660226), (35, 565908), (42, 471590), (49, 404220), (60, 330113), (70, 282954), (84, 235795), (98, 202110), (105, 188636), (140, 141477), (147, 134740), (196, 101055), (210, 94318), (245, 80844), (294, 67370), (420, 47159), (490, 40422), (588, 33685), (735, 26948), (980, 20211), (1470, 13474), (2940, 6737)]