199984900

素因数分解:

$2^2\times 5^2\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{389}}^1$

素因数の和:553

約数の個数: 72

約数和(自身を含む): 447861960

約数和(自身を除く): 247877060

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 53, 97, 100, 106, 194, 212, 265, 388, 389, 485, 530, 778, 970, 1060, 1325, 1556, 1940, 1945, 2425, 2650, 3890, 4850, 5141, 5300, 7780, 9700, 9725, 10282, 19450, 20564, 20617, 25705, 37733, 38900, 41234, 51410, 75466, 82468, 102820, 103085, 128525, 150932, 188665, 206170, 257050, 377330, 412340, 514100, 515425, 754660, 943325, 1030850, 1886650, 1999849, 2061700, 3773300, 3999698, 7999396, 9999245, 19998490, 39996980, 49996225, 99992450, 199984900]

約数ペア:

[(1, 199984900), (2, 99992450), (4, 49996225), (5, 39996980), (10, 19998490), (20, 9999245), (25, 7999396), (50, 3999698), (53, 3773300), (97, 2061700), (100, 1999849), (106, 1886650), (194, 1030850), (212, 943325), (265, 754660), (388, 515425), (389, 514100), (485, 412340), (530, 377330), (778, 257050), (970, 206170), (1060, 188665), (1325, 150932), (1556, 128525), (1940, 103085), (1945, 102820), (2425, 82468), (2650, 75466), (3890, 51410), (4850, 41234), (5141, 38900), (5300, 37733), (7780, 25705), (9700, 20617), (9725, 20564), (10282, 19450)]