20711500

素因数分解:

$2^2\times 5^3\times {\mathrm{23}}^1\times {\mathrm{1801}}^1$

素因数の和:1843

約数の個数: 48

約数和(自身を含む): 47226816

約数和(自身を除く): 26515316

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 92, 100, 115, 125, 230, 250, 460, 500, 575, 1150, 1801, 2300, 2875, 3602, 5750, 7204, 9005, 11500, 18010, 36020, 41423, 45025, 82846, 90050, 165692, 180100, 207115, 225125, 414230, 450250, 828460, 900500, 1035575, 2071150, 4142300, 5177875, 10355750, 20711500]

約数ペア:

[(1, 20711500), (2, 10355750), (4, 5177875), (5, 4142300), (10, 2071150), (20, 1035575), (23, 900500), (25, 828460), (46, 450250), (50, 414230), (92, 225125), (100, 207115), (115, 180100), (125, 165692), (230, 90050), (250, 82846), (460, 45025), (500, 41423), (575, 36020), (1150, 18010), (1801, 11500), (2300, 9005), (2875, 7204), (3602, 5750)]