638851680

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{19289}}^1$

素因数の和:19333

約数の個数: 144

約数和(自身を含む): 2274985440

約数和(自身を除く): 1636133760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 30, 32, 36, 40, 45, 46, 48, 60, 69, 72, 80, 90, 92, 96, 115, 120, 138, 144, 160, 180, 184, 207, 230, 240, 276, 288, 345, 360, 368, 414, 460, 480, 552, 690, 720, 736, 828, 920, 1035, 1104, 1380, 1440, 1656, 1840, 2070, 2208, 2760, 3312, 3680, 4140, 5520, 6624, 8280, 11040, 16560, 19289, 33120, 38578, 57867, 77156, 96445, 115734, 154312, 173601, 192890, 231468, 289335, 308624, 347202, 385780, 443647, 462936, 578670, 617248, 694404, 771560, 868005, 887294, 925872, 1157340, 1330941, 1388808, 1543120, 1736010, 1774588, 1851744, 2218235, 2314680, 2661882, 2777616, 3086240, 3472020, 3549176, 3992823, 4436470, 4629360, 5323764, 5555232, 6654705, 6944040, 7098352, 7985646, 8872940, 9258720, 10647528, 13309410, 13888080, 14196704, 15971292, 17745880, 19964115, 21295056, 26618820, 27776160, 31942584, 35491760, 39928230, 42590112, 53237640, 63885168, 70983520, 79856460, 106475280, 127770336, 159712920, 212950560, 319425840, 638851680]

約数ペア:

[(1, 638851680), (2, 319425840), (3, 212950560), (4, 159712920), (5, 127770336), (6, 106475280), (8, 79856460), (9, 70983520), (10, 63885168), (12, 53237640), (15, 42590112), (16, 39928230), (18, 35491760), (20, 31942584), (23, 27776160), (24, 26618820), (30, 21295056), (32, 19964115), (36, 17745880), (40, 15971292), (45, 14196704), (46, 13888080), (48, 13309410), (60, 10647528), (69, 9258720), (72, 8872940), (80, 7985646), (90, 7098352), (92, 6944040), (96, 6654705), (115, 5555232), (120, 5323764), (138, 4629360), (144, 4436470), (160, 3992823), (180, 3549176), (184, 3472020), (207, 3086240), (230, 2777616), (240, 2661882), (276, 2314680), (288, 2218235), (345, 1851744), (360, 1774588), (368, 1736010), (414, 1543120), (460, 1388808), (480, 1330941), (552, 1157340), (690, 925872), (720, 887294), (736, 868005), (828, 771560), (920, 694404), (1035, 617248), (1104, 578670), (1380, 462936), (1440, 443647), (1656, 385780), (1840, 347202), (2070, 308624), (2208, 289335), (2760, 231468), (3312, 192890), (3680, 173601), (4140, 154312), (5520, 115734), (6624, 96445), (8280, 77156), (11040, 57867), (16560, 38578), (19289, 33120)]