8439440

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1$

素因数の和:168

約数の個数: 80

約数和(自身を含む): 20998656

約数和(自身を除く): 12559216

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 41, 62, 80, 82, 83, 124, 155, 164, 166, 205, 248, 310, 328, 332, 410, 415, 496, 620, 656, 664, 820, 830, 1240, 1271, 1328, 1640, 1660, 2480, 2542, 2573, 3280, 3320, 3403, 5084, 5146, 6355, 6640, 6806, 10168, 10292, 12710, 12865, 13612, 17015, 20336, 20584, 25420, 25730, 27224, 34030, 41168, 50840, 51460, 54448, 68060, 101680, 102920, 105493, 136120, 205840, 210986, 272240, 421972, 527465, 843944, 1054930, 1687888, 2109860, 4219720, 8439440]

約数ペア:

[(1, 8439440), (2, 4219720), (4, 2109860), (5, 1687888), (8, 1054930), (10, 843944), (16, 527465), (20, 421972), (31, 272240), (40, 210986), (41, 205840), (62, 136120), (80, 105493), (82, 102920), (83, 101680), (124, 68060), (155, 54448), (164, 51460), (166, 50840), (205, 41168), (248, 34030), (310, 27224), (328, 25730), (332, 25420), (410, 20584), (415, 20336), (496, 17015), (620, 13612), (656, 12865), (664, 12710), (820, 10292), (830, 10168), (1240, 6806), (1271, 6640), (1328, 6355), (1640, 5146), (1660, 5084), (2480, 3403), (2542, 3320), (2573, 3280)]