19998888

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{9157}}^1$

素因数の和:9186

約数の個数: 64

約数和(自身を含む): 61541760

約数和(自身を除く): 41542872

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 21, 24, 26, 28, 39, 42, 52, 56, 78, 84, 91, 104, 156, 168, 182, 273, 312, 364, 546, 728, 1092, 2184, 9157, 18314, 27471, 36628, 54942, 64099, 73256, 109884, 119041, 128198, 192297, 219768, 238082, 256396, 357123, 384594, 476164, 512792, 714246, 769188, 833287, 952328, 1428492, 1538376, 1666574, 2499861, 2856984, 3333148, 4999722, 6666296, 9999444, 19998888]

約数ペア:

[(1, 19998888), (2, 9999444), (3, 6666296), (4, 4999722), (6, 3333148), (7, 2856984), (8, 2499861), (12, 1666574), (13, 1538376), (14, 1428492), (21, 952328), (24, 833287), (26, 769188), (28, 714246), (39, 512792), (42, 476164), (52, 384594), (56, 357123), (78, 256396), (84, 238082), (91, 219768), (104, 192297), (156, 128198), (168, 119041), (182, 109884), (273, 73256), (312, 64099), (364, 54942), (546, 36628), (728, 27471), (1092, 18314), (2184, 9157)]