20472.00000000

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{971}}^1$

素因数の和:1081

約数の個数: 128

約数和(自身を含む): 251942400

約数和(自身を除く): 179350440

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 89, 105, 120, 140, 168, 178, 210, 267, 280, 356, 420, 445, 534, 623, 712, 840, 890, 971, 1068, 1246, 1335, 1780, 1869, 1942, 2136, 2492, 2670, 2913, 3115, 3560, 3738, 3884, 4855, 4984, 5340, 5826, 6230, 6797, 7476, 7768, 9345, 9710, 10680, 11652, 12460, 13594, 14565, 14952, 18690, 19420, 20391, 23304, 24920, 27188, 29130, 33985, 37380, 38840, 40782, 54376, 58260, 67970, 74760, 81564, 86419, 101955, 116520, 135940, 163128, 172838, 203910, 259257, 271880, 345676, 407820, 432095, 518514, 604933, 691352, 815640, 864190, 1037028, 1209866, 1296285, 1728380, 1814799, 2074056, 2419732, 2592570, 3024665, 3456760, 3629598, 4839464, 5185140, 6049330, 7259196, 9073995, 10370280, 12098660, 14518392, 18147990, 24197320, 36295980, 72591960]

約数ペア:

[(1, 72591960), (2, 36295980), (3, 24197320), (4, 18147990), (5, 14518392), (6, 12098660), (7, 10370280), (8, 9073995), (10, 7259196), (12, 6049330), (14, 5185140), (15, 4839464), (20, 3629598), (21, 3456760), (24, 3024665), (28, 2592570), (30, 2419732), (35, 2074056), (40, 1814799), (42, 1728380), (56, 1296285), (60, 1209866), (70, 1037028), (84, 864190), (89, 815640), (105, 691352), (120, 604933), (140, 518514), (168, 432095), (178, 407820), (210, 345676), (267, 271880), (280, 259257), (356, 203910), (420, 172838), (445, 163128), (534, 135940), (623, 116520), (712, 101955), (840, 86419), (890, 81564), (971, 74760), (1068, 67970), (1246, 58260), (1335, 54376), (1780, 40782), (1869, 38840), (1942, 37380), (2136, 33985), (2492, 29130), (2670, 27188), (2913, 24920), (3115, 23304), (3560, 20391), (3738, 19420), (3884, 18690), (4855, 14952), (4984, 14565), (5340, 13594), (5826, 12460), (6230, 11652), (6797, 10680), (7476, 9710), (7768, 9345)]