19737740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{1229}}^1$

素因数の和:1322

約数の個数: 48

約数和(自身を含む): 45874080

約数和(自身を除く): 26136340

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 73, 110, 146, 220, 292, 365, 730, 803, 1229, 1460, 1606, 2458, 3212, 4015, 4916, 6145, 8030, 12290, 13519, 16060, 24580, 27038, 54076, 67595, 89717, 135190, 179434, 270380, 358868, 448585, 897170, 986887, 1794340, 1973774, 3947548, 4934435, 9868870, 19737740]

約数ペア:

[(1, 19737740), (2, 9868870), (4, 4934435), (5, 3947548), (10, 1973774), (11, 1794340), (20, 986887), (22, 897170), (44, 448585), (55, 358868), (73, 270380), (110, 179434), (146, 135190), (220, 89717), (292, 67595), (365, 54076), (730, 27038), (803, 24580), (1229, 16060), (1460, 13519), (1606, 12290), (2458, 8030), (3212, 6145), (4015, 4916)]