19912760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{197}}^1$

素因数の和:253

約数の個数: 96

約数和(自身を含む): 54315360

約数和(自身を除く): 34402600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 56, 70, 76, 95, 133, 140, 152, 190, 197, 266, 280, 361, 380, 394, 532, 665, 722, 760, 788, 985, 1064, 1330, 1379, 1444, 1576, 1805, 1970, 2527, 2660, 2758, 2888, 3610, 3743, 3940, 5054, 5320, 5516, 6895, 7220, 7486, 7880, 10108, 11032, 12635, 13790, 14440, 14972, 18715, 20216, 25270, 26201, 27580, 29944, 37430, 50540, 52402, 55160, 71117, 74860, 101080, 104804, 131005, 142234, 149720, 209608, 262010, 284468, 355585, 497819, 524020, 568936, 711170, 995638, 1048040, 1422340, 1991276, 2489095, 2844680, 3982552, 4978190, 9956380, 19912760]

約数ペア:

[(1, 19912760), (2, 9956380), (4, 4978190), (5, 3982552), (7, 2844680), (8, 2489095), (10, 1991276), (14, 1422340), (19, 1048040), (20, 995638), (28, 711170), (35, 568936), (38, 524020), (40, 497819), (56, 355585), (70, 284468), (76, 262010), (95, 209608), (133, 149720), (140, 142234), (152, 131005), (190, 104804), (197, 101080), (266, 74860), (280, 71117), (361, 55160), (380, 52402), (394, 50540), (532, 37430), (665, 29944), (722, 27580), (760, 26201), (788, 25270), (985, 20216), (1064, 18715), (1330, 14972), (1379, 14440), (1444, 13790), (1576, 12635), (1805, 11032), (1970, 10108), (2527, 7880), (2660, 7486), (2758, 7220), (2888, 6895), (3610, 5516), (3743, 5320), (3940, 5054)]