20384800

素因数分解:

$2^5\times 5^2\times {\mathrm{83}}^1\times {\mathrm{307}}^1$

素因数の和:410

約数の個数: 72

約数和(自身を含む): 50528016

約数和(自身を除く): 30143216

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 83, 100, 160, 166, 200, 307, 332, 400, 415, 614, 664, 800, 830, 1228, 1328, 1535, 1660, 2075, 2456, 2656, 3070, 3320, 4150, 4912, 6140, 6640, 7675, 8300, 9824, 12280, 13280, 15350, 16600, 24560, 25481, 30700, 33200, 49120, 50962, 61400, 66400, 101924, 122800, 127405, 203848, 245600, 254810, 407696, 509620, 637025, 815392, 1019240, 1274050, 2038480, 2548100, 4076960, 5096200, 10192400, 20384800]

約数ペア:

[(1, 20384800), (2, 10192400), (4, 5096200), (5, 4076960), (8, 2548100), (10, 2038480), (16, 1274050), (20, 1019240), (25, 815392), (32, 637025), (40, 509620), (50, 407696), (80, 254810), (83, 245600), (100, 203848), (160, 127405), (166, 122800), (200, 101924), (307, 66400), (332, 61400), (400, 50962), (415, 49120), (614, 33200), (664, 30700), (800, 25481), (830, 24560), (1228, 16600), (1328, 15350), (1535, 13280), (1660, 12280), (2075, 9824), (2456, 8300), (2656, 7675), (3070, 6640), (3320, 6140), (4150, 4912)]