64890420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{154501}}^1$

素因数の和:154520

約数の個数: 48

約数和(自身を含む): 207650688

約数和(自身を除く): 142760268

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 154501, 309002, 463503, 618004, 772505, 927006, 1081507, 1545010, 1854012, 2163014, 2317515, 3090020, 3244521, 4326028, 4635030, 5407535, 6489042, 9270060, 10815070, 12978084, 16222605, 21630140, 32445210, 64890420]

約数ペア:

[(1, 64890420), (2, 32445210), (3, 21630140), (4, 16222605), (5, 12978084), (6, 10815070), (7, 9270060), (10, 6489042), (12, 5407535), (14, 4635030), (15, 4326028), (20, 3244521), (21, 3090020), (28, 2317515), (30, 2163014), (35, 1854012), (42, 1545010), (60, 1081507), (70, 927006), (84, 772505), (105, 618004), (140, 463503), (210, 309002), (420, 154501)]