19665650

素因数分解:

$2^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{181}}^1$

素因数の和:287

約数の個数: 48

約数和(自身を含む): 38388168

約数和(自身を除く): 18722518

約数列:

[1, 2, 5, 10, 25, 41, 50, 53, 82, 106, 181, 205, 265, 362, 410, 530, 905, 1025, 1325, 1810, 2050, 2173, 2650, 4346, 4525, 7421, 9050, 9593, 10865, 14842, 19186, 21730, 37105, 47965, 54325, 74210, 95930, 108650, 185525, 239825, 371050, 393313, 479650, 786626, 1966565, 3933130, 9832825, 19665650]

約数ペア:

[(1, 19665650), (2, 9832825), (5, 3933130), (10, 1966565), (25, 786626), (41, 479650), (50, 393313), (53, 371050), (82, 239825), (106, 185525), (181, 108650), (205, 95930), (265, 74210), (362, 54325), (410, 47965), (530, 37105), (905, 21730), (1025, 19186), (1325, 14842), (1810, 10865), (2050, 9593), (2173, 9050), (2650, 7421), (4346, 4525)]