81906500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{12601}}^1$

素因数の和:12633

約数の個数: 48

約数和(自身を含む): 192659376

約数和(自身を除く): 110752876

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 650, 1300, 1625, 3250, 6500, 12601, 25202, 50404, 63005, 126010, 163813, 252020, 315025, 327626, 630050, 655252, 819065, 1260100, 1575125, 1638130, 3150250, 3276260, 4095325, 6300500, 8190650, 16381300, 20476625, 40953250, 81906500]

約数ペア:

[(1, 81906500), (2, 40953250), (4, 20476625), (5, 16381300), (10, 8190650), (13, 6300500), (20, 4095325), (25, 3276260), (26, 3150250), (50, 1638130), (52, 1575125), (65, 1260100), (100, 819065), (125, 655252), (130, 630050), (250, 327626), (260, 315025), (325, 252020), (500, 163813), (650, 126010), (1300, 63005), (1625, 50404), (3250, 25202), (6500, 12601)]