1289770820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^3\times {\mathrm{149}}^1\times {\mathrm{197}}^1$

素因数の和:394

約数の個数: 96

約数和(自身を含む): 2968812000

約数和(自身を除く): 1679041180

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 149, 169, 197, 260, 298, 338, 394, 596, 676, 745, 788, 845, 985, 1490, 1690, 1937, 1970, 2197, 2561, 2980, 3380, 3874, 3940, 4394, 5122, 7748, 8788, 9685, 10244, 10985, 12805, 19370, 21970, 25181, 25610, 29353, 33293, 38740, 43940, 50362, 51220, 58706, 66586, 100724, 117412, 125905, 133172, 146765, 166465, 251810, 293530, 327353, 332930, 381589, 432809, 503620, 587060, 654706, 665860, 763178, 865618, 1309412, 1526356, 1636765, 1731236, 1907945, 2164045, 3273530, 3815890, 4328090, 4960657, 6547060, 7631780, 8656180, 9921314, 19842628, 24803285, 49606570, 64488541, 99213140, 128977082, 257954164, 322442705, 644885410, 1289770820]

約数ペア:

[(1, 1289770820), (2, 644885410), (4, 322442705), (5, 257954164), (10, 128977082), (13, 99213140), (20, 64488541), (26, 49606570), (52, 24803285), (65, 19842628), (130, 9921314), (149, 8656180), (169, 7631780), (197, 6547060), (260, 4960657), (298, 4328090), (338, 3815890), (394, 3273530), (596, 2164045), (676, 1907945), (745, 1731236), (788, 1636765), (845, 1526356), (985, 1309412), (1490, 865618), (1690, 763178), (1937, 665860), (1970, 654706), (2197, 587060), (2561, 503620), (2980, 432809), (3380, 381589), (3874, 332930), (3940, 327353), (4394, 293530), (5122, 251810), (7748, 166465), (8788, 146765), (9685, 133172), (10244, 125905), (10985, 117412), (12805, 100724), (19370, 66586), (21970, 58706), (25181, 51220), (25610, 50362), (29353, 43940), (33293, 38740)]