18916400

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^2\times {\mathrm{131}}^1$

素因数の和:187

約数の個数: 90

約数和(自身を含む): 48330612

約数和(自身を除く): 29414212

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 131, 152, 190, 200, 262, 304, 361, 380, 400, 475, 524, 655, 722, 760, 950, 1048, 1310, 1444, 1520, 1805, 1900, 2096, 2489, 2620, 2888, 3275, 3610, 3800, 4978, 5240, 5776, 6550, 7220, 7600, 9025, 9956, 10480, 12445, 13100, 14440, 18050, 19912, 24890, 26200, 28880, 36100, 39824, 47291, 49780, 52400, 62225, 72200, 94582, 99560, 124450, 144400, 189164, 199120, 236455, 248900, 378328, 472910, 497800, 756656, 945820, 995600, 1182275, 1891640, 2364550, 3783280, 4729100, 9458200, 18916400]

約数ペア:

[(1, 18916400), (2, 9458200), (4, 4729100), (5, 3783280), (8, 2364550), (10, 1891640), (16, 1182275), (19, 995600), (20, 945820), (25, 756656), (38, 497800), (40, 472910), (50, 378328), (76, 248900), (80, 236455), (95, 199120), (100, 189164), (131, 144400), (152, 124450), (190, 99560), (200, 94582), (262, 72200), (304, 62225), (361, 52400), (380, 49780), (400, 47291), (475, 39824), (524, 36100), (655, 28880), (722, 26200), (760, 24890), (950, 19912), (1048, 18050), (1310, 14440), (1444, 13100), (1520, 12445), (1805, 10480), (1900, 9956), (2096, 9025), (2489, 7600), (2620, 7220), (2888, 6550), (3275, 5776), (3610, 5240), (3800, 4978)]