21388302

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:202

約数の個数: 72

約数和(自身を含む): 51386400

約数和(自身を除く): 29998098

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 79, 89, 117, 158, 169, 178, 234, 237, 267, 338, 474, 507, 534, 711, 801, 1014, 1027, 1157, 1422, 1521, 1602, 2054, 2314, 3042, 3081, 3471, 6162, 6942, 7031, 9243, 10413, 13351, 14062, 15041, 18486, 20826, 21093, 26702, 30082, 40053, 42186, 45123, 63279, 80106, 90246, 91403, 120159, 126558, 135369, 182806, 240318, 270738, 274209, 548418, 822627, 1188239, 1645254, 2376478, 3564717, 7129434, 10694151, 21388302]

約数ペア:

[(1, 21388302), (2, 10694151), (3, 7129434), (6, 3564717), (9, 2376478), (13, 1645254), (18, 1188239), (26, 822627), (39, 548418), (78, 274209), (79, 270738), (89, 240318), (117, 182806), (158, 135369), (169, 126558), (178, 120159), (234, 91403), (237, 90246), (267, 80106), (338, 63279), (474, 45123), (507, 42186), (534, 40053), (711, 30082), (801, 26702), (1014, 21093), (1027, 20826), (1157, 18486), (1422, 15041), (1521, 14062), (1602, 13351), (2054, 10413), (2314, 9243), (3042, 7031), (3081, 6942), (3471, 6162)]