21903596

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{257}}^1$

素因数の和:434

約数の個数: 48

約数和(自身を含む): 45511200

約数和(自身を除く): 23607604

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 143, 149, 257, 286, 298, 514, 572, 596, 1028, 1639, 1937, 2827, 3278, 3341, 3874, 5654, 6556, 6682, 7748, 11308, 13364, 21307, 36751, 38293, 42614, 73502, 76586, 85228, 147004, 153172, 421223, 497809, 842446, 995618, 1684892, 1991236, 5475899, 10951798, 21903596]

約数ペア:

[(1, 21903596), (2, 10951798), (4, 5475899), (11, 1991236), (13, 1684892), (22, 995618), (26, 842446), (44, 497809), (52, 421223), (143, 153172), (149, 147004), (257, 85228), (286, 76586), (298, 73502), (514, 42614), (572, 38293), (596, 36751), (1028, 21307), (1639, 13364), (1937, 11308), (2827, 7748), (3278, 6682), (3341, 6556), (3874, 5654)]