21010000

素因数分解:

$2^4\times 5^4\times {\mathrm{11}}^1\times {\mathrm{191}}^1$

素因数の和:230

約数の個数: 100

約数和(自身を含む): 55782144

約数和(自身を除く): 34772144

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 125, 176, 191, 200, 220, 250, 275, 382, 400, 440, 500, 550, 625, 764, 880, 955, 1000, 1100, 1250, 1375, 1528, 1910, 2000, 2101, 2200, 2500, 2750, 3056, 3820, 4202, 4400, 4775, 5000, 5500, 6875, 7640, 8404, 9550, 10000, 10505, 11000, 13750, 15280, 16808, 19100, 21010, 22000, 23875, 27500, 33616, 38200, 42020, 47750, 52525, 55000, 76400, 84040, 95500, 105050, 110000, 119375, 168080, 191000, 210100, 238750, 262625, 382000, 420200, 477500, 525250, 840400, 955000, 1050500, 1313125, 1910000, 2101000, 2626250, 4202000, 5252500, 10505000, 21010000]

約数ペア:

[(1, 21010000), (2, 10505000), (4, 5252500), (5, 4202000), (8, 2626250), (10, 2101000), (11, 1910000), (16, 1313125), (20, 1050500), (22, 955000), (25, 840400), (40, 525250), (44, 477500), (50, 420200), (55, 382000), (80, 262625), (88, 238750), (100, 210100), (110, 191000), (125, 168080), (176, 119375), (191, 110000), (200, 105050), (220, 95500), (250, 84040), (275, 76400), (382, 55000), (400, 52525), (440, 47750), (500, 42020), (550, 38200), (625, 33616), (764, 27500), (880, 23875), (955, 22000), (1000, 21010), (1100, 19100), (1250, 16808), (1375, 15280), (1528, 13750), (1910, 11000), (2000, 10505), (2101, 10000), (2200, 9550), (2500, 8404), (2750, 7640), (3056, 6875), (3820, 5500), (4202, 5000), (4400, 4775)]