21497004

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{349}}^1$

素因数の和:447

約数の個数: 72

約数和(自身を含む): 57330000

約数和(自身を除く): 35832996

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 58, 59, 87, 116, 118, 174, 177, 236, 261, 348, 349, 354, 522, 531, 698, 708, 1044, 1047, 1062, 1396, 1711, 2094, 2124, 3141, 3422, 4188, 5133, 6282, 6844, 10121, 10266, 12564, 15399, 20242, 20532, 20591, 30363, 30798, 40484, 41182, 60726, 61596, 61773, 82364, 91089, 121452, 123546, 182178, 185319, 247092, 364356, 370638, 597139, 741276, 1194278, 1791417, 2388556, 3582834, 5374251, 7165668, 10748502, 21497004]

約数ペア:

[(1, 21497004), (2, 10748502), (3, 7165668), (4, 5374251), (6, 3582834), (9, 2388556), (12, 1791417), (18, 1194278), (29, 741276), (36, 597139), (58, 370638), (59, 364356), (87, 247092), (116, 185319), (118, 182178), (174, 123546), (177, 121452), (236, 91089), (261, 82364), (348, 61773), (349, 61596), (354, 60726), (522, 41182), (531, 40484), (698, 30798), (708, 30363), (1044, 20591), (1047, 20532), (1062, 20242), (1396, 15399), (1711, 12564), (2094, 10266), (2124, 10121), (3141, 6844), (3422, 6282), (4188, 5133)]