81374761825

素因数分解:

$5^2\times 7^2\times {\mathrm{239}}^1\times {\mathrm{499}}^1\times {\mathrm{557}}^1$

素因数の和:1319

約数の個数: 72

約数和(自身を含む): 118318320000

約数和(自身を除く): 36943558175

約数列:

[1, 5, 7, 25, 35, 49, 175, 239, 245, 499, 557, 1195, 1225, 1673, 2495, 2785, 3493, 3899, 5975, 8365, 11711, 12475, 13925, 17465, 19495, 24451, 27293, 41825, 58555, 87325, 97475, 119261, 122255, 133123, 136465, 277943, 292775, 596305, 611275, 665615, 682325, 834827, 931861, 1389715, 1945601, 2981525, 3328075, 4174135, 4659305, 5843789, 6523027, 6948575, 9728005, 13619207, 20870675, 23296525, 29218945, 32615135, 48640025, 66428377, 68096035, 146094725, 163075675, 332141885, 340480175, 464998639, 1660709425, 2324993195, 3254990473, 11624965975, 16274952365, 81374761825]

約数ペア:

[(1, 81374761825), (5, 16274952365), (7, 11624965975), (25, 3254990473), (35, 2324993195), (49, 1660709425), (175, 464998639), (239, 340480175), (245, 332141885), (499, 163075675), (557, 146094725), (1195, 68096035), (1225, 66428377), (1673, 48640025), (2495, 32615135), (2785, 29218945), (3493, 23296525), (3899, 20870675), (5975, 13619207), (8365, 9728005), (11711, 6948575), (12475, 6523027), (13925, 5843789), (17465, 4659305), (19495, 4174135), (24451, 3328075), (27293, 2981525), (41825, 1945601), (58555, 1389715), (87325, 931861), (97475, 834827), (119261, 682325), (122255, 665615), (133123, 611275), (136465, 596305), (277943, 292775)]