21977202

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1$

素因数の和:259

約数の個数: 64

約数和(自身を含む): 49996800

約数和(自身を除く): 28019598

約数列:

[1, 2, 3, 6, 13, 26, 31, 39, 61, 62, 78, 93, 122, 149, 183, 186, 298, 366, 403, 447, 793, 806, 894, 1209, 1586, 1891, 1937, 2379, 2418, 3782, 3874, 4619, 4758, 5673, 5811, 9089, 9238, 11346, 11622, 13857, 18178, 24583, 27267, 27714, 49166, 54534, 60047, 73749, 118157, 120094, 147498, 180141, 236314, 281759, 354471, 360282, 563518, 708942, 845277, 1690554, 3662867, 7325734, 10988601, 21977202]

約数ペア:

[(1, 21977202), (2, 10988601), (3, 7325734), (6, 3662867), (13, 1690554), (26, 845277), (31, 708942), (39, 563518), (61, 360282), (62, 354471), (78, 281759), (93, 236314), (122, 180141), (149, 147498), (183, 120094), (186, 118157), (298, 73749), (366, 60047), (403, 54534), (447, 49166), (793, 27714), (806, 27267), (894, 24583), (1209, 18178), (1586, 13857), (1891, 11622), (1937, 11346), (2379, 9238), (2418, 9089), (3782, 5811), (3874, 5673), (4619, 4758)]