21119430400

素因数分解:

$2^8\times 5^2\times {\mathrm{809}}^1\times {\mathrm{4079}}^1$

素因数の和:4914

約数の個数: 108

約数和(自身を含む): 52351336800

約数和(自身を除く): 31231906400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 800, 809, 1280, 1600, 1618, 3200, 3236, 4045, 4079, 6400, 6472, 8090, 8158, 12944, 16180, 16316, 20225, 20395, 25888, 32360, 32632, 40450, 40790, 51776, 64720, 65264, 80900, 81580, 101975, 103552, 129440, 130528, 161800, 163160, 203950, 207104, 258880, 261056, 323600, 326320, 407900, 517760, 522112, 647200, 652640, 815800, 1035520, 1044224, 1294400, 1305280, 1631600, 2588800, 2610560, 3263200, 3299911, 5177600, 5221120, 6526400, 6599822, 13052800, 13199644, 16499555, 26105600, 26399288, 32999110, 52798576, 65998220, 82497775, 105597152, 131996440, 164995550, 211194304, 263992880, 329991100, 422388608, 527985760, 659982200, 844777216, 1055971520, 1319964400, 2111943040, 2639928800, 4223886080, 5279857600, 10559715200, 21119430400]

約数ペア:

[(1, 21119430400), (2, 10559715200), (4, 5279857600), (5, 4223886080), (8, 2639928800), (10, 2111943040), (16, 1319964400), (20, 1055971520), (25, 844777216), (32, 659982200), (40, 527985760), (50, 422388608), (64, 329991100), (80, 263992880), (100, 211194304), (128, 164995550), (160, 131996440), (200, 105597152), (256, 82497775), (320, 65998220), (400, 52798576), (640, 32999110), (800, 26399288), (809, 26105600), (1280, 16499555), (1600, 13199644), (1618, 13052800), (3200, 6599822), (3236, 6526400), (4045, 5221120), (4079, 5177600), (6400, 3299911), (6472, 3263200), (8090, 2610560), (8158, 2588800), (12944, 1631600), (16180, 1305280), (16316, 1294400), (20225, 1044224), (20395, 1035520), (25888, 815800), (32360, 652640), (32632, 647200), (40450, 522112), (40790, 517760), (51776, 407900), (64720, 326320), (65264, 323600), (80900, 261056), (81580, 258880), (101975, 207104), (103552, 203950), (129440, 163160), (130528, 161800)]