21110425

素因数分解:

$5^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{907}}^1$

素因数の和:950

約数の個数: 36

約数和(自身を含む): 32088720

約数和(自身を除く): 10978295

約数列:

[1, 5, 7, 19, 25, 35, 49, 95, 133, 175, 245, 475, 665, 907, 931, 1225, 3325, 4535, 4655, 6349, 17233, 22675, 23275, 31745, 44443, 86165, 120631, 158725, 222215, 430825, 603155, 844417, 1111075, 3015775, 4222085, 21110425]

約数ペア:

[(1, 21110425), (5, 4222085), (7, 3015775), (19, 1111075), (25, 844417), (35, 603155), (49, 430825), (95, 222215), (133, 158725), (175, 120631), (245, 86165), (475, 44443), (665, 31745), (907, 23275), (931, 22675), (1225, 17233), (3325, 6349), (4535, 4655)]