20198790

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:222

約数の個数: 96

約数和(自身を含む): 55598400

約数和(自身を除く): 35399610

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 29, 30, 45, 58, 71, 87, 90, 109, 142, 145, 174, 213, 218, 261, 290, 327, 355, 426, 435, 522, 545, 639, 654, 710, 870, 981, 1065, 1090, 1278, 1305, 1635, 1962, 2059, 2130, 2610, 3161, 3195, 3270, 4118, 4905, 6177, 6322, 6390, 7739, 9483, 9810, 10295, 12354, 15478, 15805, 18531, 18966, 20590, 23217, 28449, 30885, 31610, 37062, 38695, 46434, 47415, 56898, 61770, 69651, 77390, 92655, 94830, 116085, 139302, 142245, 185310, 224431, 232170, 284490, 348255, 448862, 673293, 696510, 1122155, 1346586, 2019879, 2244310, 3366465, 4039758, 6732930, 10099395, 20198790]

約数ペア:

[(1, 20198790), (2, 10099395), (3, 6732930), (5, 4039758), (6, 3366465), (9, 2244310), (10, 2019879), (15, 1346586), (18, 1122155), (29, 696510), (30, 673293), (45, 448862), (58, 348255), (71, 284490), (87, 232170), (90, 224431), (109, 185310), (142, 142245), (145, 139302), (174, 116085), (213, 94830), (218, 92655), (261, 77390), (290, 69651), (327, 61770), (355, 56898), (426, 47415), (435, 46434), (522, 38695), (545, 37062), (639, 31610), (654, 30885), (710, 28449), (870, 23217), (981, 20590), (1065, 18966), (1090, 18531), (1278, 15805), (1305, 15478), (1635, 12354), (1962, 10295), (2059, 9810), (2130, 9483), (2610, 7739), (3161, 6390), (3195, 6322), (3270, 6177), (4118, 4905)]