28078785

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{691}}^1$

素因数の和:755

約数の個数: 64

約数和(自身を含む): 58460160

約数和(自身を除く): 30381375

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 43, 45, 63, 105, 129, 135, 189, 215, 301, 315, 387, 645, 691, 903, 945, 1161, 1505, 1935, 2073, 2709, 3455, 4515, 4837, 5805, 6219, 8127, 10365, 13545, 14511, 18657, 24185, 29713, 31095, 40635, 43533, 72555, 89139, 93285, 130599, 148565, 207991, 217665, 267417, 445695, 623973, 652995, 802251, 1039955, 1337085, 1871919, 3119865, 4011255, 5615757, 9359595, 28078785]

約数ペア:

[(1, 28078785), (3, 9359595), (5, 5615757), (7, 4011255), (9, 3119865), (15, 1871919), (21, 1337085), (27, 1039955), (35, 802251), (43, 652995), (45, 623973), (63, 445695), (105, 267417), (129, 217665), (135, 207991), (189, 148565), (215, 130599), (301, 93285), (315, 89139), (387, 72555), (645, 43533), (691, 40635), (903, 31095), (945, 29713), (1161, 24185), (1505, 18657), (1935, 14511), (2073, 13545), (2709, 10365), (3455, 8127), (4515, 6219), (4837, 5805)]