21424305

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{10739}}^1$

素因数の和:10773

約数の個数: 32

約数和(自身を含む): 41241600

約数和(自身を除く): 19817295

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 399, 665, 1995, 10739, 32217, 53695, 75173, 161085, 204041, 225519, 375865, 612123, 1020205, 1127595, 1428287, 3060615, 4284861, 7141435, 21424305]

約数ペア:

[(1, 21424305), (3, 7141435), (5, 4284861), (7, 3060615), (15, 1428287), (19, 1127595), (21, 1020205), (35, 612123), (57, 375865), (95, 225519), (105, 204041), (133, 161085), (285, 75173), (399, 53695), (665, 32217), (1995, 10739)]