28853620

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 62233920

約数和(自身を除く): 33380300

約数列:

[1, 2, 4, 5, 10, 20, 97, 107, 139, 194, 214, 278, 388, 428, 485, 535, 556, 695, 970, 1070, 1390, 1940, 2140, 2780, 10379, 13483, 14873, 20758, 26966, 29746, 41516, 51895, 53932, 59492, 67415, 74365, 103790, 134830, 148730, 207580, 269660, 297460, 1442681, 2885362, 5770724, 7213405, 14426810, 28853620]

約数ペア:

[(1, 28853620), (2, 14426810), (4, 7213405), (5, 5770724), (10, 2885362), (20, 1442681), (97, 297460), (107, 269660), (139, 207580), (194, 148730), (214, 134830), (278, 103790), (388, 74365), (428, 67415), (485, 59492), (535, 53932), (556, 51895), (695, 41516), (970, 29746), (1070, 26966), (1390, 20758), (1940, 14873), (2140, 13483), (2780, 10379)]