161718400

素因数分解:

$2^7\times 5^2\times {\mathrm{97}}^1\times {\mathrm{521}}^1$

素因数の和:642

約数の個数: 96

約数和(自身を含む): 404388180

約数和(自身を除く): 242669780

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 97, 100, 128, 160, 194, 200, 320, 388, 400, 485, 521, 640, 776, 800, 970, 1042, 1552, 1600, 1940, 2084, 2425, 2605, 3104, 3200, 3880, 4168, 4850, 5210, 6208, 7760, 8336, 9700, 10420, 12416, 13025, 15520, 16672, 19400, 20840, 26050, 31040, 33344, 38800, 41680, 50537, 52100, 62080, 66688, 77600, 83360, 101074, 104200, 155200, 166720, 202148, 208400, 252685, 310400, 333440, 404296, 416800, 505370, 808592, 833600, 1010740, 1263425, 1617184, 1667200, 2021480, 2526850, 3234368, 4042960, 5053700, 6468736, 8085920, 10107400, 16171840, 20214800, 32343680, 40429600, 80859200, 161718400]

約数ペア:

[(1, 161718400), (2, 80859200), (4, 40429600), (5, 32343680), (8, 20214800), (10, 16171840), (16, 10107400), (20, 8085920), (25, 6468736), (32, 5053700), (40, 4042960), (50, 3234368), (64, 2526850), (80, 2021480), (97, 1667200), (100, 1617184), (128, 1263425), (160, 1010740), (194, 833600), (200, 808592), (320, 505370), (388, 416800), (400, 404296), (485, 333440), (521, 310400), (640, 252685), (776, 208400), (800, 202148), (970, 166720), (1042, 155200), (1552, 104200), (1600, 101074), (1940, 83360), (2084, 77600), (2425, 66688), (2605, 62080), (3104, 52100), (3200, 50537), (3880, 41680), (4168, 38800), (4850, 33344), (5210, 31040), (6208, 26050), (7760, 20840), (8336, 19400), (9700, 16672), (10420, 15520), (12416, 13025)]