21101675

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{173}}^1$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 32622912

約数和(自身を除く): 11521237

約数列:

[1, 5, 7, 17, 25, 35, 41, 85, 119, 173, 175, 205, 287, 425, 595, 697, 865, 1025, 1211, 1435, 2941, 2975, 3485, 4325, 4879, 6055, 7093, 7175, 14705, 17425, 20587, 24395, 30275, 35465, 49651, 73525, 102935, 120581, 121975, 177325, 248255, 514675, 602905, 844067, 1241275, 3014525, 4220335, 21101675]

約数ペア:

[(1, 21101675), (5, 4220335), (7, 3014525), (17, 1241275), (25, 844067), (35, 602905), (41, 514675), (85, 248255), (119, 177325), (173, 121975), (175, 120581), (205, 102935), (287, 73525), (425, 49651), (595, 35465), (697, 30275), (865, 24395), (1025, 20587), (1211, 17425), (1435, 14705), (2941, 7175), (2975, 7093), (3485, 6055), (4325, 4879)]