1999956780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{46489}}^1$

素因数の和:46743

約数の個数: 72

約数和(自身を含む): 6092049600

約数和(自身を除く): 4092092820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 239, 478, 717, 956, 1195, 1434, 2151, 2390, 2868, 3585, 4302, 4780, 7170, 8604, 10755, 14340, 21510, 43020, 46489, 92978, 139467, 185956, 232445, 278934, 418401, 464890, 557868, 697335, 836802, 929780, 1394670, 1673604, 2092005, 2789340, 4184010, 8368020, 11110871, 22221742, 33332613, 44443484, 55554355, 66665226, 99997839, 111108710, 133330452, 166663065, 199995678, 222217420, 333326130, 399991356, 499989195, 666652260, 999978390, 1999956780]

約数ペア:

[(1, 1999956780), (2, 999978390), (3, 666652260), (4, 499989195), (5, 399991356), (6, 333326130), (9, 222217420), (10, 199995678), (12, 166663065), (15, 133330452), (18, 111108710), (20, 99997839), (30, 66665226), (36, 55554355), (45, 44443484), (60, 33332613), (90, 22221742), (180, 11110871), (239, 8368020), (478, 4184010), (717, 2789340), (956, 2092005), (1195, 1673604), (1434, 1394670), (2151, 929780), (2390, 836802), (2868, 697335), (3585, 557868), (4302, 464890), (4780, 418401), (7170, 278934), (8604, 232445), (10755, 185956), (14340, 139467), (21510, 92978), (43020, 46489)]