79740400

素因数分解:

$2^4\times 5^2\times {\mathrm{311}}^1\times {\mathrm{641}}^1$

素因数の和:970

約数の個数: 60

約数和(自身を含む): 192492144

約数和(自身を除く): 112751744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 311, 400, 622, 641, 1244, 1282, 1555, 2488, 2564, 3110, 3205, 4976, 5128, 6220, 6410, 7775, 10256, 12440, 12820, 15550, 16025, 24880, 25640, 31100, 32050, 51280, 62200, 64100, 124400, 128200, 199351, 256400, 398702, 797404, 996755, 1594808, 1993510, 3189616, 3987020, 4983775, 7974040, 9967550, 15948080, 19935100, 39870200, 79740400]

約数ペア:

[(1, 79740400), (2, 39870200), (4, 19935100), (5, 15948080), (8, 9967550), (10, 7974040), (16, 4983775), (20, 3987020), (25, 3189616), (40, 1993510), (50, 1594808), (80, 996755), (100, 797404), (200, 398702), (311, 256400), (400, 199351), (622, 128200), (641, 124400), (1244, 64100), (1282, 62200), (1555, 51280), (2488, 32050), (2564, 31100), (3110, 25640), (3205, 24880), (4976, 16025), (5128, 15550), (6220, 12820), (6410, 12440), (7775, 10256)]