21950170

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1$

素因数の和:247

約数の個数: 64

約数和(自身を含む): 45868032

約数和(自身を除く): 23917862

約数列:

[1, 2, 5, 10, 11, 22, 31, 41, 55, 62, 82, 110, 155, 157, 205, 310, 314, 341, 410, 451, 682, 785, 902, 1271, 1570, 1705, 1727, 2255, 2542, 3410, 3454, 4510, 4867, 6355, 6437, 8635, 9734, 12710, 12874, 13981, 17270, 24335, 27962, 32185, 48670, 53537, 64370, 69905, 70807, 107074, 139810, 141614, 199547, 267685, 354035, 399094, 535370, 708070, 997735, 1995470, 2195017, 4390034, 10975085, 21950170]

約数ペア:

[(1, 21950170), (2, 10975085), (5, 4390034), (10, 2195017), (11, 1995470), (22, 997735), (31, 708070), (41, 535370), (55, 399094), (62, 354035), (82, 267685), (110, 199547), (155, 141614), (157, 139810), (205, 107074), (310, 70807), (314, 69905), (341, 64370), (410, 53537), (451, 48670), (682, 32185), (785, 27962), (902, 24335), (1271, 17270), (1570, 13981), (1705, 12874), (1727, 12710), (2255, 9734), (2542, 8635), (3410, 6437), (3454, 6355), (4510, 4867)]