1648653640

素因数分解:

$2^3\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{20743}}^1$

素因数の和:22741

約数の個数: 32

約数和(自身を含む): 3711516480

約数和(自身を除く): 2062862840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1987, 3974, 7948, 9935, 15896, 19870, 20743, 39740, 41486, 79480, 82972, 103715, 165944, 207430, 414860, 829720, 41216341, 82432682, 164865364, 206081705, 329730728, 412163410, 824326820, 1648653640]

約数ペア:

[(1, 1648653640), (2, 824326820), (4, 412163410), (5, 329730728), (8, 206081705), (10, 164865364), (20, 82432682), (40, 41216341), (1987, 829720), (3974, 414860), (7948, 207430), (9935, 165944), (15896, 103715), (19870, 82972), (20743, 79480), (39740, 41486)]