21295120

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3457}}^1$

素因数の和:3488

約数の個数: 80

約数和(自身を含む): 61746048

約数和(自身を除く): 40450928

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 220, 280, 308, 385, 440, 560, 616, 770, 880, 1232, 1540, 3080, 3457, 6160, 6914, 13828, 17285, 24199, 27656, 34570, 38027, 48398, 55312, 69140, 76054, 96796, 120995, 138280, 152108, 190135, 193592, 241990, 266189, 276560, 304216, 380270, 387184, 483980, 532378, 608432, 760540, 967960, 1064756, 1330945, 1521080, 1935920, 2129512, 2661890, 3042160, 4259024, 5323780, 10647560, 21295120]

約数ペア:

[(1, 21295120), (2, 10647560), (4, 5323780), (5, 4259024), (7, 3042160), (8, 2661890), (10, 2129512), (11, 1935920), (14, 1521080), (16, 1330945), (20, 1064756), (22, 967960), (28, 760540), (35, 608432), (40, 532378), (44, 483980), (55, 387184), (56, 380270), (70, 304216), (77, 276560), (80, 266189), (88, 241990), (110, 193592), (112, 190135), (140, 152108), (154, 138280), (176, 120995), (220, 96796), (280, 76054), (308, 69140), (385, 55312), (440, 48398), (560, 38027), (616, 34570), (770, 27656), (880, 24199), (1232, 17285), (1540, 13828), (3080, 6914), (3457, 6160)]