19865600

素因数分解:

$2^{13}\times 5^2\times {\mathrm{97}}^1$

素因数の和:133

約数の個数: 84

約数和(自身を含む): 49771554

約数和(自身を除く): 29905954

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 97, 100, 128, 160, 194, 200, 256, 320, 388, 400, 485, 512, 640, 776, 800, 970, 1024, 1280, 1552, 1600, 1940, 2048, 2425, 2560, 3104, 3200, 3880, 4096, 4850, 5120, 6208, 6400, 7760, 8192, 9700, 10240, 12416, 12800, 15520, 19400, 20480, 24832, 25600, 31040, 38800, 40960, 49664, 51200, 62080, 77600, 99328, 102400, 124160, 155200, 198656, 204800, 248320, 310400, 397312, 496640, 620800, 794624, 993280, 1241600, 1986560, 2483200, 3973120, 4966400, 9932800, 19865600]

約数ペア:

[(1, 19865600), (2, 9932800), (4, 4966400), (5, 3973120), (8, 2483200), (10, 1986560), (16, 1241600), (20, 993280), (25, 794624), (32, 620800), (40, 496640), (50, 397312), (64, 310400), (80, 248320), (97, 204800), (100, 198656), (128, 155200), (160, 124160), (194, 102400), (200, 99328), (256, 77600), (320, 62080), (388, 51200), (400, 49664), (485, 40960), (512, 38800), (640, 31040), (776, 25600), (800, 24832), (970, 20480), (1024, 19400), (1280, 15520), (1552, 12800), (1600, 12416), (1940, 10240), (2048, 9700), (2425, 8192), (2560, 7760), (3104, 6400), (3200, 6208), (3880, 5120), (4096, 4850)]