20481840

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{28447}}^1$

素因数の和:28466

約数の個数: 60

約数和(自身を含む): 68787264

約数和(自身を除く): 48305424

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 28447, 56894, 85341, 113788, 142235, 170682, 227576, 256023, 284470, 341364, 426705, 455152, 512046, 568940, 682728, 853410, 1024092, 1137880, 1280115, 1365456, 1706820, 2048184, 2275760, 2560230, 3413640, 4096368, 5120460, 6827280, 10240920, 20481840]

約数ペア:

[(1, 20481840), (2, 10240920), (3, 6827280), (4, 5120460), (5, 4096368), (6, 3413640), (8, 2560230), (9, 2275760), (10, 2048184), (12, 1706820), (15, 1365456), (16, 1280115), (18, 1137880), (20, 1024092), (24, 853410), (30, 682728), (36, 568940), (40, 512046), (45, 455152), (48, 426705), (60, 341364), (72, 284470), (80, 256023), (90, 227576), (120, 170682), (144, 142235), (180, 113788), (240, 85341), (360, 56894), (720, 28447)]