851007280

素因数分解:

$2^4\times 5^1\times {\mathrm{509}}^1\times {\mathrm{20899}}^1$

素因数の和:21421

約数の個数: 40

約数和(自身を含む): 1982574000

約数和(自身を除く): 1131566720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 509, 1018, 2036, 2545, 4072, 5090, 8144, 10180, 20360, 20899, 40720, 41798, 83596, 104495, 167192, 208990, 334384, 417980, 835960, 1671920, 10637591, 21275182, 42550364, 53187955, 85100728, 106375910, 170201456, 212751820, 425503640, 851007280]

約数ペア:

[(1, 851007280), (2, 425503640), (4, 212751820), (5, 170201456), (8, 106375910), (10, 85100728), (16, 53187955), (20, 42550364), (40, 21275182), (80, 10637591), (509, 1671920), (1018, 835960), (2036, 417980), (2545, 334384), (4072, 208990), (5090, 167192), (8144, 104495), (10180, 83596), (20360, 41798), (20899, 40720)]