21407724

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{307}}^1$

素因数の和:479

約数の個数: 72

約数和(自身を含む): 58858800

約数和(自身を除く): 37451076

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 149, 156, 234, 298, 307, 447, 468, 596, 614, 894, 921, 1228, 1341, 1788, 1842, 1937, 2682, 2763, 3684, 3874, 3991, 5364, 5526, 5811, 7748, 7982, 11052, 11622, 11973, 15964, 17433, 23244, 23946, 34866, 35919, 45743, 47892, 69732, 71838, 91486, 137229, 143676, 182972, 274458, 411687, 548916, 594659, 823374, 1189318, 1646748, 1783977, 2378636, 3567954, 5351931, 7135908, 10703862, 21407724]

約数ペア:

[(1, 21407724), (2, 10703862), (3, 7135908), (4, 5351931), (6, 3567954), (9, 2378636), (12, 1783977), (13, 1646748), (18, 1189318), (26, 823374), (36, 594659), (39, 548916), (52, 411687), (78, 274458), (117, 182972), (149, 143676), (156, 137229), (234, 91486), (298, 71838), (307, 69732), (447, 47892), (468, 45743), (596, 35919), (614, 34866), (894, 23946), (921, 23244), (1228, 17433), (1341, 15964), (1788, 11973), (1842, 11622), (1937, 11052), (2682, 7982), (2763, 7748), (3684, 5811), (3874, 5526), (3991, 5364)]