20016800

素因数分解:

$2^5\times 5^2\times {\mathrm{131}}^1\times {\mathrm{191}}^1$

素因数の和:342

約数の個数: 72

約数和(自身を含む): 49496832

約数和(自身を除く): 29480032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 131, 160, 191, 200, 262, 382, 400, 524, 655, 764, 800, 955, 1048, 1310, 1528, 1910, 2096, 2620, 3056, 3275, 3820, 4192, 4775, 5240, 6112, 6550, 7640, 9550, 10480, 13100, 15280, 19100, 20960, 25021, 26200, 30560, 38200, 50042, 52400, 76400, 100084, 104800, 125105, 152800, 200168, 250210, 400336, 500420, 625525, 800672, 1000840, 1251050, 2001680, 2502100, 4003360, 5004200, 10008400, 20016800]

約数ペア:

[(1, 20016800), (2, 10008400), (4, 5004200), (5, 4003360), (8, 2502100), (10, 2001680), (16, 1251050), (20, 1000840), (25, 800672), (32, 625525), (40, 500420), (50, 400336), (80, 250210), (100, 200168), (131, 152800), (160, 125105), (191, 104800), (200, 100084), (262, 76400), (382, 52400), (400, 50042), (524, 38200), (655, 30560), (764, 26200), (800, 25021), (955, 20960), (1048, 19100), (1310, 15280), (1528, 13100), (1910, 10480), (2096, 9550), (2620, 7640), (3056, 6550), (3275, 6112), (3820, 5240), (4192, 4775)]