20567500

素因数分解:

$2^2\times 5^4\times {\mathrm{19}}^1\times {\mathrm{433}}^1$

素因数の和:476

約数の個数: 60

約数和(自身を含む): 47453560

約数和(自身を除く): 26886060

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 125, 190, 250, 380, 433, 475, 500, 625, 866, 950, 1250, 1732, 1900, 2165, 2375, 2500, 4330, 4750, 8227, 8660, 9500, 10825, 11875, 16454, 21650, 23750, 32908, 41135, 43300, 47500, 54125, 82270, 108250, 164540, 205675, 216500, 270625, 411350, 541250, 822700, 1028375, 1082500, 2056750, 4113500, 5141875, 10283750, 20567500]

約数ペア:

[(1, 20567500), (2, 10283750), (4, 5141875), (5, 4113500), (10, 2056750), (19, 1082500), (20, 1028375), (25, 822700), (38, 541250), (50, 411350), (76, 270625), (95, 216500), (100, 205675), (125, 164540), (190, 108250), (250, 82270), (380, 54125), (433, 47500), (475, 43300), (500, 41135), (625, 32908), (866, 23750), (950, 21650), (1250, 16454), (1732, 11875), (1900, 10825), (2165, 9500), (2375, 8660), (2500, 8227), (4330, 4750)]