210010000

素因数分解:

$2^4\times 5^4\times {\mathrm{21001}}^1$

素因数の和:21029

約数の個数: 50

約数和(自身を含む): 508479422

約数和(自身を除く): 298469422

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 2000, 2500, 5000, 10000, 21001, 42002, 84004, 105005, 168008, 210010, 336016, 420020, 525025, 840040, 1050050, 1680080, 2100100, 2625125, 4200200, 5250250, 8400400, 10500500, 13125625, 21001000, 26251250, 42002000, 52502500, 105005000, 210010000]

約数ペア:

[(1, 210010000), (2, 105005000), (4, 52502500), (5, 42002000), (8, 26251250), (10, 21001000), (16, 13125625), (20, 10500500), (25, 8400400), (40, 5250250), (50, 4200200), (80, 2625125), (100, 2100100), (125, 1680080), (200, 1050050), (250, 840040), (400, 525025), (500, 420020), (625, 336016), (1000, 210010), (1250, 168008), (2000, 105005), (2500, 84004), (5000, 42002), (10000, 21001)]