161019880

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{82153}}^1$

素因数の和:82178

約数の個数: 48

約数和(自身を含む): 421450020

約数和(自身を除く): 260430140

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 82153, 164306, 328612, 410765, 575071, 657224, 821530, 1150142, 1643060, 2300284, 2875355, 3286120, 4025497, 4600568, 5750710, 8050994, 11501420, 16101988, 20127485, 23002840, 32203976, 40254970, 80509940, 161019880]

約数ペア:

[(1, 161019880), (2, 80509940), (4, 40254970), (5, 32203976), (7, 23002840), (8, 20127485), (10, 16101988), (14, 11501420), (20, 8050994), (28, 5750710), (35, 4600568), (40, 4025497), (49, 3286120), (56, 2875355), (70, 2300284), (98, 1643060), (140, 1150142), (196, 821530), (245, 657224), (280, 575071), (392, 410765), (490, 328612), (980, 164306), (1960, 82153)]