64362500

素因数分解:

$2^2\times 5^5\times {\mathrm{19}}^1\times {\mathrm{271}}^1$

素因数の和:319

約数の個数: 72

約数和(自身を含む): 148740480

約数和(自身を除く): 84377980

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 125, 190, 250, 271, 380, 475, 500, 542, 625, 950, 1084, 1250, 1355, 1900, 2375, 2500, 2710, 3125, 4750, 5149, 5420, 6250, 6775, 9500, 10298, 11875, 12500, 13550, 20596, 23750, 25745, 27100, 33875, 47500, 51490, 59375, 67750, 102980, 118750, 128725, 135500, 169375, 237500, 257450, 338750, 514900, 643625, 677500, 846875, 1287250, 1693750, 2574500, 3218125, 3387500, 6436250, 12872500, 16090625, 32181250, 64362500]

約数ペア:

[(1, 64362500), (2, 32181250), (4, 16090625), (5, 12872500), (10, 6436250), (19, 3387500), (20, 3218125), (25, 2574500), (38, 1693750), (50, 1287250), (76, 846875), (95, 677500), (100, 643625), (125, 514900), (190, 338750), (250, 257450), (271, 237500), (380, 169375), (475, 135500), (500, 128725), (542, 118750), (625, 102980), (950, 67750), (1084, 59375), (1250, 51490), (1355, 47500), (1900, 33875), (2375, 27100), (2500, 25745), (2710, 23750), (3125, 20596), (4750, 13550), (5149, 12500), (5420, 11875), (6250, 10298), (6775, 9500)]