31212840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{263}}^1$

素因数の和:343

約数の個数: 128

約数和(自身を含む): 100362240

約数和(自身を除く): 69149400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 40, 43, 46, 60, 69, 86, 92, 115, 120, 129, 138, 172, 184, 215, 230, 258, 263, 276, 344, 345, 430, 460, 516, 526, 552, 645, 690, 789, 860, 920, 989, 1032, 1052, 1290, 1315, 1380, 1578, 1720, 1978, 2104, 2580, 2630, 2760, 2967, 3156, 3945, 3956, 4945, 5160, 5260, 5934, 6049, 6312, 7890, 7912, 9890, 10520, 11309, 11868, 12098, 14835, 15780, 18147, 19780, 22618, 23736, 24196, 29670, 30245, 31560, 33927, 36294, 39560, 45236, 48392, 56545, 59340, 60490, 67854, 72588, 90472, 90735, 113090, 118680, 120980, 135708, 145176, 169635, 181470, 226180, 241960, 260107, 271416, 339270, 362940, 452360, 520214, 678540, 725880, 780321, 1040428, 1300535, 1357080, 1560642, 2080856, 2601070, 3121284, 3901605, 5202140, 6242568, 7803210, 10404280, 15606420, 31212840]

約数ペア:

[(1, 31212840), (2, 15606420), (3, 10404280), (4, 7803210), (5, 6242568), (6, 5202140), (8, 3901605), (10, 3121284), (12, 2601070), (15, 2080856), (20, 1560642), (23, 1357080), (24, 1300535), (30, 1040428), (40, 780321), (43, 725880), (46, 678540), (60, 520214), (69, 452360), (86, 362940), (92, 339270), (115, 271416), (120, 260107), (129, 241960), (138, 226180), (172, 181470), (184, 169635), (215, 145176), (230, 135708), (258, 120980), (263, 118680), (276, 113090), (344, 90735), (345, 90472), (430, 72588), (460, 67854), (516, 60490), (526, 59340), (552, 56545), (645, 48392), (690, 45236), (789, 39560), (860, 36294), (920, 33927), (989, 31560), (1032, 30245), (1052, 29670), (1290, 24196), (1315, 23736), (1380, 22618), (1578, 19780), (1720, 18147), (1978, 15780), (2104, 14835), (2580, 12098), (2630, 11868), (2760, 11309), (2967, 10520), (3156, 9890), (3945, 7912), (3956, 7890), (4945, 6312), (5160, 6049), (5260, 5934)]