21389280

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{4051}}^1$

素因数の和:4080

約数の個数: 96

約数和(自身を含む): 73519488

約数和(自身を除く): 52130208

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, 66, 80, 88, 96, 110, 120, 132, 160, 165, 176, 220, 240, 264, 330, 352, 440, 480, 528, 660, 880, 1056, 1320, 1760, 2640, 4051, 5280, 8102, 12153, 16204, 20255, 24306, 32408, 40510, 44561, 48612, 60765, 64816, 81020, 89122, 97224, 121530, 129632, 133683, 162040, 178244, 194448, 222805, 243060, 267366, 324080, 356488, 388896, 445610, 486120, 534732, 648160, 668415, 712976, 891220, 972240, 1069464, 1336830, 1425952, 1782440, 1944480, 2138928, 2673660, 3564880, 4277856, 5347320, 7129760, 10694640, 21389280]

約数ペア:

[(1, 21389280), (2, 10694640), (3, 7129760), (4, 5347320), (5, 4277856), (6, 3564880), (8, 2673660), (10, 2138928), (11, 1944480), (12, 1782440), (15, 1425952), (16, 1336830), (20, 1069464), (22, 972240), (24, 891220), (30, 712976), (32, 668415), (33, 648160), (40, 534732), (44, 486120), (48, 445610), (55, 388896), (60, 356488), (66, 324080), (80, 267366), (88, 243060), (96, 222805), (110, 194448), (120, 178244), (132, 162040), (160, 133683), (165, 129632), (176, 121530), (220, 97224), (240, 89122), (264, 81020), (330, 64816), (352, 60765), (440, 48612), (480, 44561), (528, 40510), (660, 32408), (880, 24306), (1056, 20255), (1320, 16204), (1760, 12153), (2640, 8102), (4051, 5280)]