20555640

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{2719}}^1$

素因数の和:2746

約数の個数: 128

約数和(自身を含む): 78336000

約数和(自身を除く): 57780360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 84, 90, 105, 108, 120, 126, 135, 140, 168, 180, 189, 210, 216, 252, 270, 280, 315, 360, 378, 420, 504, 540, 630, 756, 840, 945, 1080, 1260, 1512, 1890, 2520, 2719, 3780, 5438, 7560, 8157, 10876, 13595, 16314, 19033, 21752, 24471, 27190, 32628, 38066, 40785, 48942, 54380, 57099, 65256, 73413, 76132, 81570, 95165, 97884, 108760, 114198, 122355, 146826, 152264, 163140, 171297, 190330, 195768, 228396, 244710, 285495, 293652, 326280, 342594, 367065, 380660, 456792, 489420, 513891, 570990, 587304, 685188, 734130, 761320, 856485, 978840, 1027782, 1141980, 1370376, 1468260, 1712970, 2055564, 2283960, 2569455, 2936520, 3425940, 4111128, 5138910, 6851880, 10277820, 20555640]

約数ペア:

[(1, 20555640), (2, 10277820), (3, 6851880), (4, 5138910), (5, 4111128), (6, 3425940), (7, 2936520), (8, 2569455), (9, 2283960), (10, 2055564), (12, 1712970), (14, 1468260), (15, 1370376), (18, 1141980), (20, 1027782), (21, 978840), (24, 856485), (27, 761320), (28, 734130), (30, 685188), (35, 587304), (36, 570990), (40, 513891), (42, 489420), (45, 456792), (54, 380660), (56, 367065), (60, 342594), (63, 326280), (70, 293652), (72, 285495), (84, 244710), (90, 228396), (105, 195768), (108, 190330), (120, 171297), (126, 163140), (135, 152264), (140, 146826), (168, 122355), (180, 114198), (189, 108760), (210, 97884), (216, 95165), (252, 81570), (270, 76132), (280, 73413), (315, 65256), (360, 57099), (378, 54380), (420, 48942), (504, 40785), (540, 38066), (630, 32628), (756, 27190), (840, 24471), (945, 21752), (1080, 19033), (1260, 16314), (1512, 13595), (1890, 10876), (2520, 8157), (2719, 7560), (3780, 5438)]