18981120

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{4943}}^1$

素因数の和:4967

約数の個数: 72

約数和(自身を含む): 60633216

約数和(自身を除く): 41652096

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 640, 768, 960, 1280, 1920, 3840, 4943, 9886, 14829, 19772, 24715, 29658, 39544, 49430, 59316, 74145, 79088, 98860, 118632, 148290, 158176, 197720, 237264, 296580, 316352, 395440, 474528, 593160, 632704, 790880, 949056, 1186320, 1265408, 1581760, 1898112, 2372640, 3163520, 3796224, 4745280, 6327040, 9490560, 18981120]

約数ペア:

[(1, 18981120), (2, 9490560), (3, 6327040), (4, 4745280), (5, 3796224), (6, 3163520), (8, 2372640), (10, 1898112), (12, 1581760), (15, 1265408), (16, 1186320), (20, 949056), (24, 790880), (30, 632704), (32, 593160), (40, 474528), (48, 395440), (60, 316352), (64, 296580), (80, 237264), (96, 197720), (120, 158176), (128, 148290), (160, 118632), (192, 98860), (240, 79088), (256, 74145), (320, 59316), (384, 49430), (480, 39544), (640, 29658), (768, 24715), (960, 19772), (1280, 14829), (1920, 9886), (3840, 4943)]