18864100

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1$

素因数の和:205

約数の個数: 72

約数和(自身を含む): 43309728

約数和(自身を除く): 24445628

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 43, 50, 82, 86, 100, 107, 164, 172, 205, 214, 215, 410, 428, 430, 535, 820, 860, 1025, 1070, 1075, 1763, 2050, 2140, 2150, 2675, 3526, 4100, 4300, 4387, 4601, 5350, 7052, 8774, 8815, 9202, 10700, 17548, 17630, 18404, 21935, 23005, 35260, 43870, 44075, 46010, 87740, 88150, 92020, 109675, 115025, 176300, 188641, 219350, 230050, 377282, 438700, 460100, 754564, 943205, 1886410, 3772820, 4716025, 9432050, 18864100]

約数ペア:

[(1, 18864100), (2, 9432050), (4, 4716025), (5, 3772820), (10, 1886410), (20, 943205), (25, 754564), (41, 460100), (43, 438700), (50, 377282), (82, 230050), (86, 219350), (100, 188641), (107, 176300), (164, 115025), (172, 109675), (205, 92020), (214, 88150), (215, 87740), (410, 46010), (428, 44075), (430, 43870), (535, 35260), (820, 23005), (860, 21935), (1025, 18404), (1070, 17630), (1075, 17548), (1763, 10700), (2050, 9202), (2140, 8815), (2150, 8774), (2675, 7052), (3526, 5350), (4100, 4601), (4300, 4387)]