1645360

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1$

素因数の和:301

約数の個数: 40

約数和(自身を含む): 3879216

約数和(自身を除く): 2233856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 157, 262, 314, 524, 628, 655, 785, 1048, 1256, 1310, 1570, 2096, 2512, 2620, 3140, 5240, 6280, 10480, 12560, 20567, 41134, 82268, 102835, 164536, 205670, 329072, 411340, 822680, 1645360]

約数ペア:

[(1, 1645360), (2, 822680), (4, 411340), (5, 329072), (8, 205670), (10, 164536), (16, 102835), (20, 82268), (40, 41134), (80, 20567), (131, 12560), (157, 10480), (262, 6280), (314, 5240), (524, 3140), (628, 2620), (655, 2512), (785, 2096), (1048, 1570), (1256, 1310)]