19786640

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14549}}^1$

素因数の和:14579

約数の個数: 40

約数和(自身を含む): 48713400

約数和(自身を除く): 28926760

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 14549, 29098, 58196, 72745, 116392, 145490, 232784, 247333, 290980, 494666, 581960, 989332, 1163920, 1236665, 1978664, 2473330, 3957328, 4946660, 9893320, 19786640]

約数ペア:

[(1, 19786640), (2, 9893320), (4, 4946660), (5, 3957328), (8, 2473330), (10, 1978664), (16, 1236665), (17, 1163920), (20, 989332), (34, 581960), (40, 494666), (68, 290980), (80, 247333), (85, 232784), (136, 145490), (170, 116392), (272, 72745), (340, 58196), (680, 29098), (1360, 14549)]