28145000

素因数分解:

$2^3\times 5^4\times {\mathrm{13}}^1\times {\mathrm{433}}^1$

素因数の和:472

約数の個数: 80

約数和(自身を含む): 71180340

約数和(自身を除く): 43035340

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 125, 130, 200, 250, 260, 325, 433, 500, 520, 625, 650, 866, 1000, 1250, 1300, 1625, 1732, 2165, 2500, 2600, 3250, 3464, 4330, 5000, 5629, 6500, 8125, 8660, 10825, 11258, 13000, 16250, 17320, 21650, 22516, 28145, 32500, 43300, 45032, 54125, 56290, 65000, 86600, 108250, 112580, 140725, 216500, 225160, 270625, 281450, 433000, 541250, 562900, 703625, 1082500, 1125800, 1407250, 2165000, 2814500, 3518125, 5629000, 7036250, 14072500, 28145000]

約数ペア:

[(1, 28145000), (2, 14072500), (4, 7036250), (5, 5629000), (8, 3518125), (10, 2814500), (13, 2165000), (20, 1407250), (25, 1125800), (26, 1082500), (40, 703625), (50, 562900), (52, 541250), (65, 433000), (100, 281450), (104, 270625), (125, 225160), (130, 216500), (200, 140725), (250, 112580), (260, 108250), (325, 86600), (433, 65000), (500, 56290), (520, 54125), (625, 45032), (650, 43300), (866, 32500), (1000, 28145), (1250, 22516), (1300, 21650), (1625, 17320), (1732, 16250), (2165, 13000), (2500, 11258), (2600, 10825), (3250, 8660), (3464, 8125), (4330, 6500), (5000, 5629)]