25489940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1117}}^1$

素因数の和:1296

約数の個数: 48

約数和(自身を含む): 61606272

約数和(自身を除く): 36116332

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 163, 326, 652, 815, 1117, 1141, 1630, 2234, 2282, 3260, 4468, 4564, 5585, 5705, 7819, 11170, 11410, 15638, 22340, 22820, 31276, 39095, 78190, 156380, 182071, 364142, 728284, 910355, 1274497, 1820710, 2548994, 3641420, 5097988, 6372485, 12744970, 25489940]

約数ペア:

[(1, 25489940), (2, 12744970), (4, 6372485), (5, 5097988), (7, 3641420), (10, 2548994), (14, 1820710), (20, 1274497), (28, 910355), (35, 728284), (70, 364142), (140, 182071), (163, 156380), (326, 78190), (652, 39095), (815, 31276), (1117, 22820), (1141, 22340), (1630, 15638), (2234, 11410), (2282, 11170), (3260, 7819), (4468, 5705), (4564, 5585)]