121209380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{1427}}^1$

素因数の和:1604

約数の個数: 48

約数和(自身を含む): 264854016

約数和(自身を除く): 143644636

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 137, 155, 274, 310, 548, 620, 685, 1370, 1427, 2740, 2854, 4247, 5708, 7135, 8494, 14270, 16988, 21235, 28540, 42470, 44237, 84940, 88474, 176948, 195499, 221185, 390998, 442370, 781996, 884740, 977495, 1954990, 3909980, 6060469, 12120938, 24241876, 30302345, 60604690, 121209380]

約数ペア:

[(1, 121209380), (2, 60604690), (4, 30302345), (5, 24241876), (10, 12120938), (20, 6060469), (31, 3909980), (62, 1954990), (124, 977495), (137, 884740), (155, 781996), (274, 442370), (310, 390998), (548, 221185), (620, 195499), (685, 176948), (1370, 88474), (1427, 84940), (2740, 44237), (2854, 42470), (4247, 28540), (5708, 21235), (7135, 16988), (8494, 14270)]