19815000

素因数分解:

$2^3\times 3^1\times 5^4\times {\mathrm{1321}}^1$

素因数の和:1350

約数の個数: 80

約数和(自身を含む): 61948920

約数和(自身を除く): 42133920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 25, 30, 40, 50, 60, 75, 100, 120, 125, 150, 200, 250, 300, 375, 500, 600, 625, 750, 1000, 1250, 1321, 1500, 1875, 2500, 2642, 3000, 3750, 3963, 5000, 5284, 6605, 7500, 7926, 10568, 13210, 15000, 15852, 19815, 26420, 31704, 33025, 39630, 52840, 66050, 79260, 99075, 132100, 158520, 165125, 198150, 264200, 330250, 396300, 495375, 660500, 792600, 825625, 990750, 1321000, 1651250, 1981500, 2476875, 3302500, 3963000, 4953750, 6605000, 9907500, 19815000]

約数ペア:

[(1, 19815000), (2, 9907500), (3, 6605000), (4, 4953750), (5, 3963000), (6, 3302500), (8, 2476875), (10, 1981500), (12, 1651250), (15, 1321000), (20, 990750), (24, 825625), (25, 792600), (30, 660500), (40, 495375), (50, 396300), (60, 330250), (75, 264200), (100, 198150), (120, 165125), (125, 158520), (150, 132100), (200, 99075), (250, 79260), (300, 66050), (375, 52840), (500, 39630), (600, 33025), (625, 31704), (750, 26420), (1000, 19815), (1250, 15852), (1321, 15000), (1500, 13210), (1875, 10568), (2500, 7926), (2642, 7500), (3000, 6605), (3750, 5284), (3963, 5000)]