21387480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{4817}}^1$

素因数の和:4868

約数の個数: 64

約数和(自身を含む): 65910240

約数和(自身を除く): 44522760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 37, 40, 60, 74, 111, 120, 148, 185, 222, 296, 370, 444, 555, 740, 888, 1110, 1480, 2220, 4440, 4817, 9634, 14451, 19268, 24085, 28902, 38536, 48170, 57804, 72255, 96340, 115608, 144510, 178229, 192680, 289020, 356458, 534687, 578040, 712916, 891145, 1069374, 1425832, 1782290, 2138748, 2673435, 3564580, 4277496, 5346870, 7129160, 10693740, 21387480]

約数ペア:

[(1, 21387480), (2, 10693740), (3, 7129160), (4, 5346870), (5, 4277496), (6, 3564580), (8, 2673435), (10, 2138748), (12, 1782290), (15, 1425832), (20, 1069374), (24, 891145), (30, 712916), (37, 578040), (40, 534687), (60, 356458), (74, 289020), (111, 192680), (120, 178229), (148, 144510), (185, 115608), (222, 96340), (296, 72255), (370, 57804), (444, 48170), (555, 38536), (740, 28902), (888, 24085), (1110, 19268), (1480, 14451), (2220, 9634), (4440, 4817)]