127780020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{5419}}^1$

素因数の和:5565

約数の個数: 72

約数和(自身を含む): 390630240

約数和(自身を除く): 262850220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 131, 180, 262, 393, 524, 655, 786, 1179, 1310, 1572, 1965, 2358, 2620, 3930, 4716, 5419, 5895, 7860, 10838, 11790, 16257, 21676, 23580, 27095, 32514, 48771, 54190, 65028, 81285, 97542, 108380, 162570, 195084, 243855, 325140, 487710, 709889, 975420, 1419778, 2129667, 2839556, 3549445, 4259334, 6389001, 7098890, 8518668, 10648335, 12778002, 14197780, 21296670, 25556004, 31945005, 42593340, 63890010, 127780020]

約数ペア:

[(1, 127780020), (2, 63890010), (3, 42593340), (4, 31945005), (5, 25556004), (6, 21296670), (9, 14197780), (10, 12778002), (12, 10648335), (15, 8518668), (18, 7098890), (20, 6389001), (30, 4259334), (36, 3549445), (45, 2839556), (60, 2129667), (90, 1419778), (131, 975420), (180, 709889), (262, 487710), (393, 325140), (524, 243855), (655, 195084), (786, 162570), (1179, 108380), (1310, 97542), (1572, 81285), (1965, 65028), (2358, 54190), (2620, 48771), (3930, 32514), (4716, 27095), (5419, 23580), (5895, 21676), (7860, 16257), (10838, 11790)]