21476520

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{353}}^1$

素因数の和:396

約数の個数: 144

約数和(自身を含む): 75794940

約数和(自身を除く): 54318420

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 30, 36, 39, 40, 45, 52, 60, 65, 72, 78, 90, 104, 117, 120, 130, 156, 169, 180, 195, 234, 260, 312, 338, 353, 360, 390, 468, 507, 520, 585, 676, 706, 780, 845, 936, 1014, 1059, 1170, 1352, 1412, 1521, 1560, 1690, 1765, 2028, 2118, 2340, 2535, 2824, 3042, 3177, 3380, 3530, 4056, 4236, 4589, 4680, 5070, 5295, 6084, 6354, 6760, 7060, 7605, 8472, 9178, 10140, 10590, 12168, 12708, 13767, 14120, 15210, 15885, 18356, 20280, 21180, 22945, 25416, 27534, 30420, 31770, 36712, 41301, 42360, 45890, 55068, 59657, 60840, 63540, 68835, 82602, 91780, 110136, 119314, 127080, 137670, 165204, 178971, 183560, 206505, 238628, 275340, 298285, 330408, 357942, 413010, 477256, 536913, 550680, 596570, 715884, 826020, 894855, 1073826, 1193140, 1431768, 1652040, 1789710, 2147652, 2386280, 2684565, 3579420, 4295304, 5369130, 7158840, 10738260, 21476520]

約数ペア:

[(1, 21476520), (2, 10738260), (3, 7158840), (4, 5369130), (5, 4295304), (6, 3579420), (8, 2684565), (9, 2386280), (10, 2147652), (12, 1789710), (13, 1652040), (15, 1431768), (18, 1193140), (20, 1073826), (24, 894855), (26, 826020), (30, 715884), (36, 596570), (39, 550680), (40, 536913), (45, 477256), (52, 413010), (60, 357942), (65, 330408), (72, 298285), (78, 275340), (90, 238628), (104, 206505), (117, 183560), (120, 178971), (130, 165204), (156, 137670), (169, 127080), (180, 119314), (195, 110136), (234, 91780), (260, 82602), (312, 68835), (338, 63540), (353, 60840), (360, 59657), (390, 55068), (468, 45890), (507, 42360), (520, 41301), (585, 36712), (676, 31770), (706, 30420), (780, 27534), (845, 25416), (936, 22945), (1014, 21180), (1059, 20280), (1170, 18356), (1352, 15885), (1412, 15210), (1521, 14120), (1560, 13767), (1690, 12708), (1765, 12168), (2028, 10590), (2118, 10140), (2340, 9178), (2535, 8472), (2824, 7605), (3042, 7060), (3177, 6760), (3380, 6354), (3530, 6084), (4056, 5295), (4236, 5070), (4589, 4680)]