28013220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8191}}^1$

素因数の和:8225

約数の個数: 72

約数和(自身を含む): 89456640

約数和(自身を除く): 61443420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 8191, 16382, 24573, 32764, 40955, 49146, 73719, 81910, 98292, 122865, 147438, 155629, 163820, 245730, 294876, 311258, 368595, 466887, 491460, 622516, 737190, 778145, 933774, 1400661, 1474380, 1556290, 1867548, 2334435, 2801322, 3112580, 4668870, 5602644, 7003305, 9337740, 14006610, 28013220]

約数ペア:

[(1, 28013220), (2, 14006610), (3, 9337740), (4, 7003305), (5, 5602644), (6, 4668870), (9, 3112580), (10, 2801322), (12, 2334435), (15, 1867548), (18, 1556290), (19, 1474380), (20, 1400661), (30, 933774), (36, 778145), (38, 737190), (45, 622516), (57, 491460), (60, 466887), (76, 368595), (90, 311258), (95, 294876), (114, 245730), (171, 163820), (180, 155629), (190, 147438), (228, 122865), (285, 98292), (342, 81910), (380, 73719), (570, 49146), (684, 40955), (855, 32764), (1140, 24573), (1710, 16382), (3420, 8191)]