80387860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{643}}^1$

素因数の和:725

約数の個数: 96

約数和(自身を含む): 207728640

約数和(自身を除く): 127340780

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 47, 70, 76, 94, 95, 133, 140, 188, 190, 235, 266, 329, 380, 470, 532, 643, 658, 665, 893, 940, 1286, 1316, 1330, 1645, 1786, 2572, 2660, 3215, 3290, 3572, 4465, 4501, 6251, 6430, 6580, 8930, 9002, 12217, 12502, 12860, 17860, 18004, 22505, 24434, 25004, 30221, 31255, 45010, 48868, 60442, 61085, 62510, 85519, 90020, 120884, 122170, 125020, 151105, 171038, 211547, 244340, 302210, 342076, 423094, 427595, 574199, 604420, 846188, 855190, 1057735, 1148398, 1710380, 2115470, 2296796, 2870995, 4019393, 4230940, 5741990, 8038786, 11483980, 16077572, 20096965, 40193930, 80387860]

約数ペア:

[(1, 80387860), (2, 40193930), (4, 20096965), (5, 16077572), (7, 11483980), (10, 8038786), (14, 5741990), (19, 4230940), (20, 4019393), (28, 2870995), (35, 2296796), (38, 2115470), (47, 1710380), (70, 1148398), (76, 1057735), (94, 855190), (95, 846188), (133, 604420), (140, 574199), (188, 427595), (190, 423094), (235, 342076), (266, 302210), (329, 244340), (380, 211547), (470, 171038), (532, 151105), (643, 125020), (658, 122170), (665, 120884), (893, 90020), (940, 85519), (1286, 62510), (1316, 61085), (1330, 60442), (1645, 48868), (1786, 45010), (2572, 31255), (2660, 30221), (3215, 25004), (3290, 24434), (3572, 22505), (4465, 18004), (4501, 17860), (6251, 12860), (6430, 12502), (6580, 12217), (8930, 9002)]