64865000

素因数分解:

$2^3\times 5^4\times {\mathrm{12973}}^1$

素因数の和:12999

約数の個数: 40

約数和(自身を含む): 151990410

約数和(自身を除く): 87125410

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 5000, 12973, 25946, 51892, 64865, 103784, 129730, 259460, 324325, 518920, 648650, 1297300, 1621625, 2594600, 3243250, 6486500, 8108125, 12973000, 16216250, 32432500, 64865000]

約数ペア:

[(1, 64865000), (2, 32432500), (4, 16216250), (5, 12973000), (8, 8108125), (10, 6486500), (20, 3243250), (25, 2594600), (40, 1621625), (50, 1297300), (100, 648650), (125, 518920), (200, 324325), (250, 259460), (500, 129730), (625, 103784), (1000, 64865), (1250, 51892), (2500, 25946), (5000, 12973)]