20271480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{523}}^1$

素因数の和:573

約数の個数: 128

約数和(自身を含む): 67910400

約数和(自身を除く): 47638920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 19, 20, 24, 30, 34, 38, 40, 51, 57, 60, 68, 76, 85, 95, 102, 114, 120, 136, 152, 170, 190, 204, 228, 255, 285, 323, 340, 380, 408, 456, 510, 523, 570, 646, 680, 760, 969, 1020, 1046, 1140, 1292, 1569, 1615, 1938, 2040, 2092, 2280, 2584, 2615, 3138, 3230, 3876, 4184, 4845, 5230, 6276, 6460, 7752, 7845, 8891, 9690, 9937, 10460, 12552, 12920, 15690, 17782, 19380, 19874, 20920, 26673, 29811, 31380, 35564, 38760, 39748, 44455, 49685, 53346, 59622, 62760, 71128, 79496, 88910, 99370, 106692, 119244, 133365, 149055, 168929, 177820, 198740, 213384, 238488, 266730, 298110, 337858, 355640, 397480, 506787, 533460, 596220, 675716, 844645, 1013574, 1066920, 1192440, 1351432, 1689290, 2027148, 2533935, 3378580, 4054296, 5067870, 6757160, 10135740, 20271480]

約数ペア:

[(1, 20271480), (2, 10135740), (3, 6757160), (4, 5067870), (5, 4054296), (6, 3378580), (8, 2533935), (10, 2027148), (12, 1689290), (15, 1351432), (17, 1192440), (19, 1066920), (20, 1013574), (24, 844645), (30, 675716), (34, 596220), (38, 533460), (40, 506787), (51, 397480), (57, 355640), (60, 337858), (68, 298110), (76, 266730), (85, 238488), (95, 213384), (102, 198740), (114, 177820), (120, 168929), (136, 149055), (152, 133365), (170, 119244), (190, 106692), (204, 99370), (228, 88910), (255, 79496), (285, 71128), (323, 62760), (340, 59622), (380, 53346), (408, 49685), (456, 44455), (510, 39748), (523, 38760), (570, 35564), (646, 31380), (680, 29811), (760, 26673), (969, 20920), (1020, 19874), (1046, 19380), (1140, 17782), (1292, 15690), (1569, 12920), (1615, 12552), (1938, 10460), (2040, 9937), (2092, 9690), (2280, 8891), (2584, 7845), (2615, 7752), (3138, 6460), (3230, 6276), (3876, 5230), (4184, 4845)]