28413320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{541}}^1$

素因数の和:666

約数の個数: 64

約数和(自身を含む): 69657840

約数和(自身を除く): 41244520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 101, 104, 130, 202, 260, 404, 505, 520, 541, 808, 1010, 1082, 1313, 2020, 2164, 2626, 2705, 4040, 4328, 5252, 5410, 6565, 7033, 10504, 10820, 13130, 14066, 21640, 26260, 28132, 35165, 52520, 54641, 56264, 70330, 109282, 140660, 218564, 273205, 281320, 437128, 546410, 710333, 1092820, 1420666, 2185640, 2841332, 3551665, 5682664, 7103330, 14206660, 28413320]

約数ペア:

[(1, 28413320), (2, 14206660), (4, 7103330), (5, 5682664), (8, 3551665), (10, 2841332), (13, 2185640), (20, 1420666), (26, 1092820), (40, 710333), (52, 546410), (65, 437128), (101, 281320), (104, 273205), (130, 218564), (202, 140660), (260, 109282), (404, 70330), (505, 56264), (520, 54641), (541, 52520), (808, 35165), (1010, 28132), (1082, 26260), (1313, 21640), (2020, 14066), (2164, 13130), (2626, 10820), (2705, 10504), (4040, 7033), (4328, 6565), (5252, 5410)]