20994584

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1$

素因数の和:240

約数の個数: 64

約数和(自身を含む): 45239040

約数和(自身を除く): 24244456

約数列:

[1, 2, 4, 8, 13, 23, 26, 46, 52, 67, 92, 104, 131, 134, 184, 262, 268, 299, 524, 536, 598, 871, 1048, 1196, 1541, 1703, 1742, 2392, 3013, 3082, 3406, 3484, 6026, 6164, 6812, 6968, 8777, 12052, 12328, 13624, 17554, 20033, 24104, 35108, 39169, 40066, 70216, 78338, 80132, 114101, 156676, 160264, 201871, 228202, 313352, 403742, 456404, 807484, 912808, 1614968, 2624323, 5248646, 10497292, 20994584]

約数ペア:

[(1, 20994584), (2, 10497292), (4, 5248646), (8, 2624323), (13, 1614968), (23, 912808), (26, 807484), (46, 456404), (52, 403742), (67, 313352), (92, 228202), (104, 201871), (131, 160264), (134, 156676), (184, 114101), (262, 80132), (268, 78338), (299, 70216), (524, 40066), (536, 39169), (598, 35108), (871, 24104), (1048, 20033), (1196, 17554), (1541, 13624), (1703, 12328), (1742, 12052), (2392, 8777), (3013, 6968), (3082, 6812), (3406, 6164), (3484, 6026)]