1285155320

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{526703}}^1$

素因数の和:526775

約数の個数: 32

約数和(自身を含む): 2939008320

約数和(自身を除く): 1653853000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 526703, 1053406, 2106812, 2633515, 4213624, 5267030, 10534060, 21068120, 32128883, 64257766, 128515532, 160644415, 257031064, 321288830, 642577660, 1285155320]

約数ペア:

[(1, 1285155320), (2, 642577660), (4, 321288830), (5, 257031064), (8, 160644415), (10, 128515532), (20, 64257766), (40, 32128883), (61, 21068120), (122, 10534060), (244, 5267030), (305, 4213624), (488, 2633515), (610, 2106812), (1220, 1053406), (2440, 526703)]