18990790

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{509}}^1$

素因数の和:577

約数の個数: 64

約数和(自身を含む): 43182720

約数和(自身を除く): 24191930

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 41, 65, 70, 82, 91, 130, 182, 205, 287, 410, 455, 509, 533, 574, 910, 1018, 1066, 1435, 2545, 2665, 2870, 3563, 3731, 5090, 5330, 6617, 7126, 7462, 13234, 17815, 18655, 20869, 33085, 35630, 37310, 41738, 46319, 66170, 92638, 104345, 146083, 208690, 231595, 271297, 292166, 463190, 542594, 730415, 1356485, 1460830, 1899079, 2712970, 3798158, 9495395, 18990790]

約数ペア:

[(1, 18990790), (2, 9495395), (5, 3798158), (7, 2712970), (10, 1899079), (13, 1460830), (14, 1356485), (26, 730415), (35, 542594), (41, 463190), (65, 292166), (70, 271297), (82, 231595), (91, 208690), (130, 146083), (182, 104345), (205, 92638), (287, 66170), (410, 46319), (455, 41738), (509, 37310), (533, 35630), (574, 33085), (910, 20869), (1018, 18655), (1066, 17815), (1435, 13234), (2545, 7462), (2665, 7126), (2870, 6617), (3563, 5330), (3731, 5090)]