19665792320

素因数分解:

$2^6\times 5^1\times {\mathrm{79}}^1\times {\mathrm{777919}}^1$

素因数の和:778015

約数の個数: 56

約数和(自身を含む): 47422003200

約数和(自身を除く): 27756210880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 158, 160, 316, 320, 395, 632, 790, 1264, 1580, 2528, 3160, 5056, 6320, 12640, 25280, 777919, 1555838, 3111676, 3889595, 6223352, 7779190, 12446704, 15558380, 24893408, 31116760, 49786816, 61455601, 62233520, 122911202, 124467040, 245822404, 248934080, 307278005, 491644808, 614556010, 983289616, 1229112020, 1966579232, 2458224040, 3933158464, 4916448080, 9832896160, 19665792320]

約数ペア:

[(1, 19665792320), (2, 9832896160), (4, 4916448080), (5, 3933158464), (8, 2458224040), (10, 1966579232), (16, 1229112020), (20, 983289616), (32, 614556010), (40, 491644808), (64, 307278005), (79, 248934080), (80, 245822404), (158, 124467040), (160, 122911202), (316, 62233520), (320, 61455601), (395, 49786816), (632, 31116760), (790, 24893408), (1264, 15558380), (1580, 12446704), (2528, 7779190), (3160, 6223352), (5056, 3889595), (6320, 3111676), (12640, 1555838), (25280, 777919)]