19783840

素因数分解:

$2^5\times 5^1\times {\mathrm{53}}^1\times {\mathrm{2333}}^1$

素因数の和:2401

約数の個数: 48

約数和(自身を含む): 47641608

約数和(自身を除く): 27857768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 80, 106, 160, 212, 265, 424, 530, 848, 1060, 1696, 2120, 2333, 4240, 4666, 8480, 9332, 11665, 18664, 23330, 37328, 46660, 74656, 93320, 123649, 186640, 247298, 373280, 494596, 618245, 989192, 1236490, 1978384, 2472980, 3956768, 4945960, 9891920, 19783840]

約数ペア:

[(1, 19783840), (2, 9891920), (4, 4945960), (5, 3956768), (8, 2472980), (10, 1978384), (16, 1236490), (20, 989192), (32, 618245), (40, 494596), (53, 373280), (80, 247298), (106, 186640), (160, 123649), (212, 93320), (265, 74656), (424, 46660), (530, 37328), (848, 23330), (1060, 18664), (1696, 11665), (2120, 9332), (2333, 8480), (4240, 4666)]