28307020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{149}}^1$

素因数の和:247

約数の個数: 96

約数和(自身を含む): 72576000

約数和(自身を除く): 44268980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 59, 70, 92, 115, 118, 140, 149, 161, 230, 236, 295, 298, 322, 413, 460, 590, 596, 644, 745, 805, 826, 1043, 1180, 1357, 1490, 1610, 1652, 2065, 2086, 2714, 2980, 3220, 3427, 4130, 4172, 5215, 5428, 6785, 6854, 8260, 8791, 9499, 10430, 13570, 13708, 17135, 17582, 18998, 20860, 23989, 27140, 34270, 35164, 37996, 43955, 47495, 47978, 61537, 68540, 87910, 94990, 95956, 119945, 123074, 175820, 189980, 202193, 239890, 246148, 307685, 404386, 479780, 615370, 808772, 1010965, 1230740, 1415351, 2021930, 2830702, 4043860, 5661404, 7076755, 14153510, 28307020]

約数ペア:

[(1, 28307020), (2, 14153510), (4, 7076755), (5, 5661404), (7, 4043860), (10, 2830702), (14, 2021930), (20, 1415351), (23, 1230740), (28, 1010965), (35, 808772), (46, 615370), (59, 479780), (70, 404386), (92, 307685), (115, 246148), (118, 239890), (140, 202193), (149, 189980), (161, 175820), (230, 123074), (236, 119945), (295, 95956), (298, 94990), (322, 87910), (413, 68540), (460, 61537), (590, 47978), (596, 47495), (644, 43955), (745, 37996), (805, 35164), (826, 34270), (1043, 27140), (1180, 23989), (1357, 20860), (1490, 18998), (1610, 17582), (1652, 17135), (2065, 13708), (2086, 13570), (2714, 10430), (2980, 9499), (3220, 8791), (3427, 8260), (4130, 6854), (4172, 6785), (5215, 5428)]