20121897795

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^2\times {\mathrm{47}}^1\times {\mathrm{16979}}^1$

素因数の和:17116

約数の個数: 48

約数和(自身を含む): 33703534080

約数和(自身を除く): 13581636285

約数列:

[1, 3, 5, 15, 41, 47, 123, 141, 205, 235, 615, 705, 1681, 1927, 5043, 5781, 8405, 9635, 16979, 25215, 28905, 50937, 79007, 84895, 237021, 254685, 395035, 696139, 798013, 1185105, 2088417, 2394039, 3480695, 3990065, 10442085, 11970195, 28541699, 32718533, 85625097, 98155599, 142708495, 163592665, 428125485, 490777995, 1341459853, 4024379559, 6707299265, 20121897795]

約数ペア:

[(1, 20121897795), (3, 6707299265), (5, 4024379559), (15, 1341459853), (41, 490777995), (47, 428125485), (123, 163592665), (141, 142708495), (205, 98155599), (235, 85625097), (615, 32718533), (705, 28541699), (1681, 11970195), (1927, 10442085), (5043, 3990065), (5781, 3480695), (8405, 2394039), (9635, 2088417), (16979, 1185105), (25215, 798013), (28905, 696139), (50937, 395035), (79007, 254685), (84895, 237021)]