20704400

素因数分解:

$2^4\times 5^2\times {\mathrm{191}}^1\times {\mathrm{271}}^1$

素因数の和:480

約数の個数: 60

約数和(自身を含む): 50187264

約数和(自身を除く): 29482864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 191, 200, 271, 382, 400, 542, 764, 955, 1084, 1355, 1528, 1910, 2168, 2710, 3056, 3820, 4336, 4775, 5420, 6775, 7640, 9550, 10840, 13550, 15280, 19100, 21680, 27100, 38200, 51761, 54200, 76400, 103522, 108400, 207044, 258805, 414088, 517610, 828176, 1035220, 1294025, 2070440, 2588050, 4140880, 5176100, 10352200, 20704400]

約数ペア:

[(1, 20704400), (2, 10352200), (4, 5176100), (5, 4140880), (8, 2588050), (10, 2070440), (16, 1294025), (20, 1035220), (25, 828176), (40, 517610), (50, 414088), (80, 258805), (100, 207044), (191, 108400), (200, 103522), (271, 76400), (382, 54200), (400, 51761), (542, 38200), (764, 27100), (955, 21680), (1084, 19100), (1355, 15280), (1528, 13550), (1910, 10840), (2168, 9550), (2710, 7640), (3056, 6775), (3820, 5420), (4336, 4775)]