21376810

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^3\times {\mathrm{139}}^1$

素因数の和:192

約数の個数: 64

約数和(自身を含む): 47980800

約数和(自身を除く): 26603990

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 139, 169, 182, 278, 338, 455, 695, 845, 910, 973, 1183, 1390, 1690, 1807, 1946, 2197, 2366, 3614, 4394, 4865, 5915, 9035, 9730, 10985, 11830, 12649, 15379, 18070, 21970, 23491, 25298, 30758, 46982, 63245, 76895, 117455, 126490, 153790, 164437, 234910, 305383, 328874, 610766, 822185, 1526915, 1644370, 2137681, 3053830, 4275362, 10688405, 21376810]

約数ペア:

[(1, 21376810), (2, 10688405), (5, 4275362), (7, 3053830), (10, 2137681), (13, 1644370), (14, 1526915), (26, 822185), (35, 610766), (65, 328874), (70, 305383), (91, 234910), (130, 164437), (139, 153790), (169, 126490), (182, 117455), (278, 76895), (338, 63245), (455, 46982), (695, 30758), (845, 25298), (910, 23491), (973, 21970), (1183, 18070), (1390, 15379), (1690, 12649), (1807, 11830), (1946, 10985), (2197, 9730), (2366, 9035), (3614, 5915), (4394, 4865)]