198454900

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{101}}^1\times {\mathrm{401}}^1$

素因数の和:530

約数の個数: 108

約数和(自身を含む): 507178476

約数和(自身を除く): 308723576

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 101, 140, 175, 196, 202, 245, 350, 401, 404, 490, 505, 700, 707, 802, 980, 1010, 1225, 1414, 1604, 2005, 2020, 2450, 2525, 2807, 2828, 3535, 4010, 4900, 4949, 5050, 5614, 7070, 8020, 9898, 10025, 10100, 11228, 14035, 14140, 17675, 19649, 19796, 20050, 24745, 28070, 35350, 39298, 40100, 40501, 49490, 56140, 70175, 70700, 78596, 81002, 98245, 98980, 123725, 140350, 162004, 196490, 202505, 247450, 280700, 283507, 392980, 405010, 491225, 494900, 567014, 810020, 982450, 1012525, 1134028, 1417535, 1964900, 1984549, 2025050, 2835070, 3969098, 4050100, 5670140, 7087675, 7938196, 9922745, 14175350, 19845490, 28350700, 39690980, 49613725, 99227450, 198454900]

約数ペア:

[(1, 198454900), (2, 99227450), (4, 49613725), (5, 39690980), (7, 28350700), (10, 19845490), (14, 14175350), (20, 9922745), (25, 7938196), (28, 7087675), (35, 5670140), (49, 4050100), (50, 3969098), (70, 2835070), (98, 2025050), (100, 1984549), (101, 1964900), (140, 1417535), (175, 1134028), (196, 1012525), (202, 982450), (245, 810020), (350, 567014), (401, 494900), (404, 491225), (490, 405010), (505, 392980), (700, 283507), (707, 280700), (802, 247450), (980, 202505), (1010, 196490), (1225, 162004), (1414, 140350), (1604, 123725), (2005, 98980), (2020, 98245), (2450, 81002), (2525, 78596), (2807, 70700), (2828, 70175), (3535, 56140), (4010, 49490), (4900, 40501), (4949, 40100), (5050, 39298), (5614, 35350), (7070, 28070), (8020, 24745), (9898, 20050), (10025, 19796), (10100, 19649), (11228, 17675), (14035, 14140)]