71831180

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{251}}^1\times {\mathrm{349}}^1$

素因数の和:650

約数の個数: 48

約数和(自身を含む): 155584800

約数和(自身を除く): 83753620

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 251, 349, 410, 502, 698, 820, 1004, 1255, 1396, 1745, 2510, 3490, 5020, 6980, 10291, 14309, 20582, 28618, 41164, 51455, 57236, 71545, 87599, 102910, 143090, 175198, 205820, 286180, 350396, 437995, 875990, 1751980, 3591559, 7183118, 14366236, 17957795, 35915590, 71831180]

約数ペア:

[(1, 71831180), (2, 35915590), (4, 17957795), (5, 14366236), (10, 7183118), (20, 3591559), (41, 1751980), (82, 875990), (164, 437995), (205, 350396), (251, 286180), (349, 205820), (410, 175198), (502, 143090), (698, 102910), (820, 87599), (1004, 71545), (1255, 57236), (1396, 51455), (1745, 41164), (2510, 28618), (3490, 20582), (5020, 14309), (6980, 10291)]