18905360

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{13901}}^1$

素因数の和:13931

約数の個数: 40

約数和(自身を含む): 46543896

約数和(自身を除く): 27638536

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 13901, 27802, 55604, 69505, 111208, 139010, 222416, 236317, 278020, 472634, 556040, 945268, 1112080, 1181585, 1890536, 2363170, 3781072, 4726340, 9452680, 18905360]

約数ペア:

[(1, 18905360), (2, 9452680), (4, 4726340), (5, 3781072), (8, 2363170), (10, 1890536), (16, 1181585), (17, 1112080), (20, 945268), (34, 556040), (40, 472634), (68, 278020), (80, 236317), (85, 222416), (136, 139010), (170, 111208), (272, 69505), (340, 55604), (680, 27802), (1360, 13901)]