18980075

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:152

約数の個数: 36

約数和(自身を含む): 26038512

約数和(自身を除く): 7058437

約数列:

[1, 5, 17, 25, 37, 71, 85, 185, 289, 355, 425, 629, 925, 1207, 1445, 1775, 2627, 3145, 6035, 7225, 10693, 13135, 15725, 20519, 30175, 44659, 53465, 65675, 102595, 223295, 267325, 512975, 759203, 1116475, 3796015, 18980075]

約数ペア:

[(1, 18980075), (5, 3796015), (17, 1116475), (25, 759203), (37, 512975), (71, 267325), (85, 223295), (185, 102595), (289, 65675), (355, 53465), (425, 44659), (629, 30175), (925, 20519), (1207, 15725), (1445, 13135), (1775, 10693), (2627, 7225), (3145, 6035)]