213131975

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{2311}}^1$

素因数の和:2376

約数の個数: 48

約数和(自身を含む): 330264576

約数和(自身を除く): 117132601

約数列:

[1, 5, 7, 17, 25, 31, 35, 85, 119, 155, 175, 217, 425, 527, 595, 775, 1085, 2311, 2635, 2975, 3689, 5425, 11555, 13175, 16177, 18445, 39287, 57775, 71641, 80885, 92225, 196435, 275009, 358205, 404425, 501487, 982175, 1217897, 1375045, 1791025, 2507435, 6089485, 6875225, 8525279, 12537175, 30447425, 42626395, 213131975]

約数ペア:

[(1, 213131975), (5, 42626395), (7, 30447425), (17, 12537175), (25, 8525279), (31, 6875225), (35, 6089485), (85, 2507435), (119, 1791025), (155, 1375045), (175, 1217897), (217, 982175), (425, 501487), (527, 404425), (595, 358205), (775, 275009), (1085, 196435), (2311, 92225), (2635, 80885), (2975, 71641), (3689, 57775), (5425, 39287), (11555, 18445), (13175, 16177)]