189722980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{2089}}^1$

素因数の和:2356

約数の個数: 48

約数和(自身を含む): 421344000

約数和(自身を除く): 231621020

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 239, 380, 478, 956, 1195, 2089, 2390, 4178, 4541, 4780, 8356, 9082, 10445, 18164, 20890, 22705, 39691, 41780, 45410, 79382, 90820, 158764, 198455, 396910, 499271, 793820, 998542, 1997084, 2496355, 4992710, 9486149, 9985420, 18972298, 37944596, 47430745, 94861490, 189722980]

約数ペア:

[(1, 189722980), (2, 94861490), (4, 47430745), (5, 37944596), (10, 18972298), (19, 9985420), (20, 9486149), (38, 4992710), (76, 2496355), (95, 1997084), (190, 998542), (239, 793820), (380, 499271), (478, 396910), (956, 198455), (1195, 158764), (2089, 90820), (2390, 79382), (4178, 45410), (4541, 41780), (4780, 39691), (8356, 22705), (9082, 20890), (10445, 18164)]