78459990

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{1217}}^1$

素因数の和:1541

約数の個数: 64

約数和(自身を含む): 216082944

約数和(自身を除く): 137622954

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 307, 614, 921, 1217, 1535, 1842, 2149, 2434, 3070, 3651, 4298, 4605, 6085, 6447, 7302, 8519, 9210, 10745, 12170, 12894, 17038, 18255, 21490, 25557, 32235, 36510, 42595, 51114, 64470, 85190, 127785, 255570, 373619, 747238, 1120857, 1868095, 2241714, 2615333, 3736190, 5230666, 5604285, 7845999, 11208570, 13076665, 15691998, 26153330, 39229995, 78459990]

約数ペア:

[(1, 78459990), (2, 39229995), (3, 26153330), (5, 15691998), (6, 13076665), (7, 11208570), (10, 7845999), (14, 5604285), (15, 5230666), (21, 3736190), (30, 2615333), (35, 2241714), (42, 1868095), (70, 1120857), (105, 747238), (210, 373619), (307, 255570), (614, 127785), (921, 85190), (1217, 64470), (1535, 51114), (1842, 42595), (2149, 36510), (2434, 32235), (3070, 25557), (3651, 21490), (4298, 18255), (4605, 17038), (6085, 12894), (6447, 12170), (7302, 10745), (8519, 9210)]