19790020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{2741}}^1$

素因数の和:2788

約数の個数: 36

約数和(自身を含む): 43877484

約数和(自身を除く): 24087464

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 2741, 3610, 5482, 7220, 10964, 13705, 27410, 52079, 54820, 104158, 208316, 260395, 520790, 989501, 1041580, 1979002, 3958004, 4947505, 9895010, 19790020]

約数ペア:

[(1, 19790020), (2, 9895010), (4, 4947505), (5, 3958004), (10, 1979002), (19, 1041580), (20, 989501), (38, 520790), (76, 260395), (95, 208316), (190, 104158), (361, 54820), (380, 52079), (722, 27410), (1444, 13705), (1805, 10964), (2741, 7220), (3610, 5482)]