261622640

素因数分解:

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

素因数の和:199

約数の個数: 120

約数和(自身を含む): 651614544

約数和(自身を除く): 389991904

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, 961, 1240, 1271, 1328, 1640, 1660, 1922, 2480, 2542, 2573, 3280, 3320, 3403, 3844, 4805, 5084, 5146, 6355, 6640, 6806, 7688, 9610, 10168, 10292, 12710, 12865, 13612, 15376, 17015, 19220, 20336, 20584, 25420, 25730, 27224, 34030, 38440, 39401, 41168, 50840, 51460, 54448, 68060, 76880, 78802, 79763, 101680, 102920, 105493, 136120, 157604, 159526, 197005, 205840, 210986, 272240, 315208, 319052, 394010, 398815, 421972, 527465, 630416, 638104, 788020, 797630, 843944, 1054930, 1276208, 1576040, 1595260, 1687888, 2109860, 3152080, 3190520, 3270283, 4219720, 6381040, 6540566, 8439440, 13081132, 16351415, 26162264, 32702830, 52324528, 65405660, 130811320, 261622640]

約数ペア:

[(1, 261622640), (2, 130811320), (4, 65405660), (5, 52324528), (8, 32702830), (10, 26162264), (16, 16351415), (20, 13081132), (31, 8439440), (40, 6540566), (41, 6381040), (62, 4219720), (80, 3270283), (82, 3190520), (83, 3152080), (124, 2109860), (155, 1687888), (164, 1595260), (166, 1576040), (205, 1276208), (248, 1054930), (310, 843944), (328, 797630), (332, 788020), (410, 638104), (415, 630416), (496, 527465), (620, 421972), (656, 398815), (664, 394010), (820, 319052), (830, 315208), (961, 272240), (1240, 210986), (1271, 205840), (1328, 197005), (1640, 159526), (1660, 157604), (1922, 136120), (2480, 105493), (2542, 102920), (2573, 101680), (3280, 79763), (3320, 78802), (3403, 76880), (3844, 68060), (4805, 54448), (5084, 51460), (5146, 50840), (6355, 41168), (6640, 39401), (6806, 38440), (7688, 34030), (9610, 27224), (10168, 25730), (10292, 25420), (12710, 20584), (12865, 20336), (13612, 19220), (15376, 17015)]