20159450

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{641}}^1$

素因数の和:707

約数の個数: 48

約数和(自身を含む): 40838904

約数和(自身を除く): 20679454

約数列:

[1, 2, 5, 10, 17, 25, 34, 37, 50, 74, 85, 170, 185, 370, 425, 629, 641, 850, 925, 1258, 1282, 1850, 3145, 3205, 6290, 6410, 10897, 15725, 16025, 21794, 23717, 31450, 32050, 47434, 54485, 108970, 118585, 237170, 272425, 403189, 544850, 592925, 806378, 1185850, 2015945, 4031890, 10079725, 20159450]

約数ペア:

[(1, 20159450), (2, 10079725), (5, 4031890), (10, 2015945), (17, 1185850), (25, 806378), (34, 592925), (37, 544850), (50, 403189), (74, 272425), (85, 237170), (170, 118585), (185, 108970), (370, 54485), (425, 47434), (629, 32050), (641, 31450), (850, 23717), (925, 21794), (1258, 16025), (1282, 15725), (1850, 10897), (3145, 6410), (3205, 6290)]