21300804

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{181}}^1\times {\mathrm{467}}^1$

素因数の和:665

約数の個数: 72

約数和(自身を含む): 62008128

約数和(自身を除く): 40707324

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 181, 252, 362, 467, 543, 724, 934, 1086, 1267, 1401, 1629, 1868, 2172, 2534, 2802, 3258, 3269, 3801, 4203, 5068, 5604, 6516, 6538, 7602, 8406, 9807, 11403, 13076, 15204, 16812, 19614, 22806, 29421, 39228, 45612, 58842, 84527, 117684, 169054, 253581, 338108, 507162, 591689, 760743, 1014324, 1183378, 1521486, 1775067, 2366756, 3042972, 3550134, 5325201, 7100268, 10650402, 21300804]

約数ペア:

[(1, 21300804), (2, 10650402), (3, 7100268), (4, 5325201), (6, 3550134), (7, 3042972), (9, 2366756), (12, 1775067), (14, 1521486), (18, 1183378), (21, 1014324), (28, 760743), (36, 591689), (42, 507162), (63, 338108), (84, 253581), (126, 169054), (181, 117684), (252, 84527), (362, 58842), (467, 45612), (543, 39228), (724, 29421), (934, 22806), (1086, 19614), (1267, 16812), (1401, 15204), (1629, 13076), (1868, 11403), (2172, 9807), (2534, 8406), (2802, 7602), (3258, 6538), (3269, 6516), (3801, 5604), (4203, 5068)]