28807220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{1097}}^1$

素因数の和:1220

約数の個数: 48

約数和(自身を含む): 65853648

約数和(自身を除く): 37046428

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 101, 130, 202, 260, 404, 505, 1010, 1097, 1313, 2020, 2194, 2626, 4388, 5252, 5485, 6565, 10970, 13130, 14261, 21940, 26260, 28522, 57044, 71305, 110797, 142610, 221594, 285220, 443188, 553985, 1107970, 1440361, 2215940, 2880722, 5761444, 7201805, 14403610, 28807220]

約数ペア:

[(1, 28807220), (2, 14403610), (4, 7201805), (5, 5761444), (10, 2880722), (13, 2215940), (20, 1440361), (26, 1107970), (52, 553985), (65, 443188), (101, 285220), (130, 221594), (202, 142610), (260, 110797), (404, 71305), (505, 57044), (1010, 28522), (1097, 26260), (1313, 21940), (2020, 14261), (2194, 13130), (2626, 10970), (4388, 6565), (5252, 5485)]