81039560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{15233}}^1$

素因数の和:15270

約数の個数: 64

約数和(自身を含む): 219369600

約数和(自身を除く): 138330040

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, 266, 280, 380, 532, 665, 760, 1064, 1330, 2660, 5320, 15233, 30466, 60932, 76165, 106631, 121864, 152330, 213262, 289427, 304660, 426524, 533155, 578854, 609320, 853048, 1066310, 1157708, 1447135, 2025989, 2132620, 2315416, 2894270, 4051978, 4265240, 5788540, 8103956, 10129945, 11577080, 16207912, 20259890, 40519780, 81039560]

約数ペア:

[(1, 81039560), (2, 40519780), (4, 20259890), (5, 16207912), (7, 11577080), (8, 10129945), (10, 8103956), (14, 5788540), (19, 4265240), (20, 4051978), (28, 2894270), (35, 2315416), (38, 2132620), (40, 2025989), (56, 1447135), (70, 1157708), (76, 1066310), (95, 853048), (133, 609320), (140, 578854), (152, 533155), (190, 426524), (266, 304660), (280, 289427), (380, 213262), (532, 152330), (665, 121864), (760, 106631), (1064, 76165), (1330, 60932), (2660, 30466), (5320, 15233)]