19898780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{599}}^1$

素因数の和:770

約数の個数: 48

約数和(自身を含む): 45964800

約数和(自身を除く): 26066020

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 151, 220, 302, 599, 604, 755, 1198, 1510, 1661, 2396, 2995, 3020, 3322, 5990, 6589, 6644, 8305, 11980, 13178, 16610, 26356, 32945, 33220, 65890, 90449, 131780, 180898, 361796, 452245, 904490, 994939, 1808980, 1989878, 3979756, 4974695, 9949390, 19898780]

約数ペア:

[(1, 19898780), (2, 9949390), (4, 4974695), (5, 3979756), (10, 1989878), (11, 1808980), (20, 994939), (22, 904490), (44, 452245), (55, 361796), (110, 180898), (151, 131780), (220, 90449), (302, 65890), (599, 33220), (604, 32945), (755, 26356), (1198, 16610), (1510, 13178), (1661, 11980), (2396, 8305), (2995, 6644), (3020, 6589), (3322, 5990)]