20740560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{971}}^1$

素因数の和:1076

約数の個数: 80

約数和(自身を含む): 65085120

約数和(自身を除く): 44344560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 89, 120, 178, 240, 267, 356, 445, 534, 712, 890, 971, 1068, 1335, 1424, 1780, 1942, 2136, 2670, 2913, 3560, 3884, 4272, 4855, 5340, 5826, 7120, 7768, 9710, 10680, 11652, 14565, 15536, 19420, 21360, 23304, 29130, 38840, 46608, 58260, 77680, 86419, 116520, 172838, 233040, 259257, 345676, 432095, 518514, 691352, 864190, 1037028, 1296285, 1382704, 1728380, 2074056, 2592570, 3456760, 4148112, 5185140, 6913520, 10370280, 20740560]

約数ペア:

[(1, 20740560), (2, 10370280), (3, 6913520), (4, 5185140), (5, 4148112), (6, 3456760), (8, 2592570), (10, 2074056), (12, 1728380), (15, 1382704), (16, 1296285), (20, 1037028), (24, 864190), (30, 691352), (40, 518514), (48, 432095), (60, 345676), (80, 259257), (89, 233040), (120, 172838), (178, 116520), (240, 86419), (267, 77680), (356, 58260), (445, 46608), (534, 38840), (712, 29130), (890, 23304), (971, 21360), (1068, 19420), (1335, 15536), (1424, 14565), (1780, 11652), (1942, 10680), (2136, 9710), (2670, 7768), (2913, 7120), (3560, 5826), (3884, 5340), (4272, 4855)]