21497788179

素因数分解:

$3^3\times 7^2\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{2897}}^1$

素因数の和:3070

約数の個数: 96

約数和(自身を含む): 38058854400

約数和(自身を除く): 16561066221

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 71, 79, 147, 189, 213, 237, 441, 497, 553, 639, 711, 1323, 1491, 1659, 1917, 2133, 2897, 3479, 3871, 4473, 4977, 5609, 8691, 10437, 11613, 13419, 14931, 16827, 20279, 26073, 31311, 34839, 39263, 50481, 60837, 78219, 93933, 104517, 117789, 141953, 151443, 182511, 205687, 228863, 274841, 353367, 425859, 547533, 617061, 686589, 824523, 1060101, 1277577, 1439809, 1602041, 1851183, 2059767, 2473569, 3832731, 4319427, 4806123, 5553549, 6179301, 7420707, 10078663, 11214287, 12958281, 14418369, 16249273, 30235989, 33642861, 38874843, 43255107, 48747819, 90707967, 100928583, 113744911, 146243457, 272123901, 302785749, 341234733, 438730371, 796214377, 1023704199, 2388643131, 3071112597, 7165929393, 21497788179]

約数ペア:

[(1, 21497788179), (3, 7165929393), (7, 3071112597), (9, 2388643131), (21, 1023704199), (27, 796214377), (49, 438730371), (63, 341234733), (71, 302785749), (79, 272123901), (147, 146243457), (189, 113744911), (213, 100928583), (237, 90707967), (441, 48747819), (497, 43255107), (553, 38874843), (639, 33642861), (711, 30235989), (1323, 16249273), (1491, 14418369), (1659, 12958281), (1917, 11214287), (2133, 10078663), (2897, 7420707), (3479, 6179301), (3871, 5553549), (4473, 4806123), (4977, 4319427), (5609, 3832731), (8691, 2473569), (10437, 2059767), (11613, 1851183), (13419, 1602041), (14931, 1439809), (16827, 1277577), (20279, 1060101), (26073, 824523), (31311, 686589), (34839, 617061), (39263, 547533), (50481, 425859), (60837, 353367), (78219, 274841), (93933, 228863), (104517, 205687), (117789, 182511), (141953, 151443)]