21655740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{5387}}^1$

素因数の和:5466

約数の個数: 48

約数和(自身を含む): 61552512

約数和(自身を除く): 39896772

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 67, 134, 201, 268, 335, 402, 670, 804, 1005, 1340, 2010, 4020, 5387, 10774, 16161, 21548, 26935, 32322, 53870, 64644, 80805, 107740, 161610, 323220, 360929, 721858, 1082787, 1443716, 1804645, 2165574, 3609290, 4331148, 5413935, 7218580, 10827870, 21655740]

約数ペア:

[(1, 21655740), (2, 10827870), (3, 7218580), (4, 5413935), (5, 4331148), (6, 3609290), (10, 2165574), (12, 1804645), (15, 1443716), (20, 1082787), (30, 721858), (60, 360929), (67, 323220), (134, 161610), (201, 107740), (268, 80805), (335, 64644), (402, 53870), (670, 32322), (804, 26935), (1005, 21548), (1340, 16161), (2010, 10774), (4020, 5387)]