205190975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{227}}^1$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 295159680

約数和(自身を除く): 89968705

約数列:

[1, 5, 11, 19, 25, 55, 95, 173, 209, 227, 275, 475, 865, 1045, 1135, 1903, 2497, 3287, 4313, 4325, 5225, 5675, 9515, 12485, 16435, 21565, 36157, 39271, 47443, 47575, 62425, 82175, 107825, 180785, 196355, 237215, 431981, 746149, 903925, 981775, 1186075, 2159905, 3730745, 8207639, 10799525, 18653725, 41038195, 205190975]

約数ペア:

[(1, 205190975), (5, 41038195), (11, 18653725), (19, 10799525), (25, 8207639), (55, 3730745), (95, 2159905), (173, 1186075), (209, 981775), (227, 903925), (275, 746149), (475, 431981), (865, 237215), (1045, 196355), (1135, 180785), (1903, 107825), (2497, 82175), (3287, 62425), (4313, 47575), (4325, 47443), (5225, 39271), (5675, 36157), (9515, 21565), (12485, 16435)]