28615480

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{491}}^1$

素因数の和:580

約数の個数: 64

約数和(自身を含む): 68014080

約数和(自身を除く): 39398600

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 47, 62, 94, 124, 155, 188, 235, 248, 310, 376, 470, 491, 620, 940, 982, 1240, 1457, 1880, 1964, 2455, 2914, 3928, 4910, 5828, 7285, 9820, 11656, 14570, 15221, 19640, 23077, 29140, 30442, 46154, 58280, 60884, 76105, 92308, 115385, 121768, 152210, 184616, 230770, 304420, 461540, 608840, 715387, 923080, 1430774, 2861548, 3576935, 5723096, 7153870, 14307740, 28615480]

約数ペア:

[(1, 28615480), (2, 14307740), (4, 7153870), (5, 5723096), (8, 3576935), (10, 2861548), (20, 1430774), (31, 923080), (40, 715387), (47, 608840), (62, 461540), (94, 304420), (124, 230770), (155, 184616), (188, 152210), (235, 121768), (248, 115385), (310, 92308), (376, 76105), (470, 60884), (491, 58280), (620, 46154), (940, 30442), (982, 29140), (1240, 23077), (1457, 19640), (1880, 15221), (1964, 14570), (2455, 11656), (2914, 9820), (3928, 7285), (4910, 5828)]