21405120

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2027}}^1$

素因数の和:2058

約数の個数: 112

約数和(自身を含む): 74176128

約数和(自身を除く): 52771008

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 32, 33, 40, 44, 48, 55, 60, 64, 66, 80, 88, 96, 110, 120, 132, 160, 165, 176, 192, 220, 240, 264, 320, 330, 352, 440, 480, 528, 660, 704, 880, 960, 1056, 1320, 1760, 2027, 2112, 2640, 3520, 4054, 5280, 6081, 8108, 10135, 10560, 12162, 16216, 20270, 22297, 24324, 30405, 32432, 40540, 44594, 48648, 60810, 64864, 66891, 81080, 89188, 97296, 111485, 121620, 129728, 133782, 162160, 178376, 194592, 222970, 243240, 267564, 324320, 334455, 356752, 389184, 445940, 486480, 535128, 648640, 668910, 713504, 891880, 972960, 1070256, 1337820, 1427008, 1783760, 1945920, 2140512, 2675640, 3567520, 4281024, 5351280, 7135040, 10702560, 21405120]

約数ペア:

[(1, 21405120), (2, 10702560), (3, 7135040), (4, 5351280), (5, 4281024), (6, 3567520), (8, 2675640), (10, 2140512), (11, 1945920), (12, 1783760), (15, 1427008), (16, 1337820), (20, 1070256), (22, 972960), (24, 891880), (30, 713504), (32, 668910), (33, 648640), (40, 535128), (44, 486480), (48, 445940), (55, 389184), (60, 356752), (64, 334455), (66, 324320), (80, 267564), (88, 243240), (96, 222970), (110, 194592), (120, 178376), (132, 162160), (160, 133782), (165, 129728), (176, 121620), (192, 111485), (220, 97296), (240, 89188), (264, 81080), (320, 66891), (330, 64864), (352, 60810), (440, 48648), (480, 44594), (528, 40540), (660, 32432), (704, 30405), (880, 24324), (960, 22297), (1056, 20270), (1320, 16216), (1760, 12162), (2027, 10560), (2112, 10135), (2640, 8108), (3520, 6081), (4054, 5280)]