19438100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{431}}^1$

素因数の和:497

約数の個数: 72

約数和(自身を含む): 47246976

約数和(自身を除く): 27808876

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 41, 44, 50, 55, 82, 100, 110, 164, 205, 220, 275, 410, 431, 451, 550, 820, 862, 902, 1025, 1100, 1724, 1804, 2050, 2155, 2255, 4100, 4310, 4510, 4741, 8620, 9020, 9482, 10775, 11275, 17671, 18964, 21550, 22550, 23705, 35342, 43100, 45100, 47410, 70684, 88355, 94820, 118525, 176710, 194381, 237050, 353420, 388762, 441775, 474100, 777524, 883550, 971905, 1767100, 1943810, 3887620, 4859525, 9719050, 19438100]

約数ペア:

[(1, 19438100), (2, 9719050), (4, 4859525), (5, 3887620), (10, 1943810), (11, 1767100), (20, 971905), (22, 883550), (25, 777524), (41, 474100), (44, 441775), (50, 388762), (55, 353420), (82, 237050), (100, 194381), (110, 176710), (164, 118525), (205, 94820), (220, 88355), (275, 70684), (410, 47410), (431, 45100), (451, 43100), (550, 35342), (820, 23705), (862, 22550), (902, 21550), (1025, 18964), (1100, 17671), (1724, 11275), (1804, 10775), (2050, 9482), (2155, 9020), (2255, 8620), (4100, 4741), (4310, 4510)]