171805220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{431}}^1\times {\mathrm{1049}}^1$

素因数の和:1508

約数の個数: 48

約数和(自身を含む): 381024000

約数和(自身を除く): 209218780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 431, 862, 1049, 1724, 2098, 2155, 4196, 4310, 5245, 8189, 8620, 10490, 16378, 19931, 20980, 32756, 39862, 40945, 79724, 81890, 99655, 163780, 199310, 398620, 452119, 904238, 1808476, 2260595, 4521190, 8590261, 9042380, 17180522, 34361044, 42951305, 85902610, 171805220]

約数ペア:

[(1, 171805220), (2, 85902610), (4, 42951305), (5, 34361044), (10, 17180522), (19, 9042380), (20, 8590261), (38, 4521190), (76, 2260595), (95, 1808476), (190, 904238), (380, 452119), (431, 398620), (862, 199310), (1049, 163780), (1724, 99655), (2098, 81890), (2155, 79724), (4196, 40945), (4310, 39862), (5245, 32756), (8189, 20980), (8620, 19931), (10490, 16378)]