31821720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{881}}^1$

素因数の和:945

約数の個数: 128

約数和(自身を含む): 111767040

約数和(自身を除く): 79945320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 43, 56, 60, 70, 84, 86, 105, 120, 129, 140, 168, 172, 210, 215, 258, 280, 301, 344, 420, 430, 516, 602, 645, 840, 860, 881, 903, 1032, 1204, 1290, 1505, 1720, 1762, 1806, 2408, 2580, 2643, 3010, 3524, 3612, 4405, 4515, 5160, 5286, 6020, 6167, 7048, 7224, 8810, 9030, 10572, 12040, 12334, 13215, 17620, 18060, 18501, 21144, 24668, 26430, 30835, 35240, 36120, 37002, 37883, 49336, 52860, 61670, 74004, 75766, 92505, 105720, 113649, 123340, 148008, 151532, 185010, 189415, 227298, 246680, 265181, 303064, 370020, 378830, 454596, 530362, 568245, 740040, 757660, 795543, 909192, 1060724, 1136490, 1325905, 1515320, 1591086, 2121448, 2272980, 2651810, 3182172, 3977715, 4545960, 5303620, 6364344, 7955430, 10607240, 15910860, 31821720]

約数ペア:

[(1, 31821720), (2, 15910860), (3, 10607240), (4, 7955430), (5, 6364344), (6, 5303620), (7, 4545960), (8, 3977715), (10, 3182172), (12, 2651810), (14, 2272980), (15, 2121448), (20, 1591086), (21, 1515320), (24, 1325905), (28, 1136490), (30, 1060724), (35, 909192), (40, 795543), (42, 757660), (43, 740040), (56, 568245), (60, 530362), (70, 454596), (84, 378830), (86, 370020), (105, 303064), (120, 265181), (129, 246680), (140, 227298), (168, 189415), (172, 185010), (210, 151532), (215, 148008), (258, 123340), (280, 113649), (301, 105720), (344, 92505), (420, 75766), (430, 74004), (516, 61670), (602, 52860), (645, 49336), (840, 37883), (860, 37002), (881, 36120), (903, 35240), (1032, 30835), (1204, 26430), (1290, 24668), (1505, 21144), (1720, 18501), (1762, 18060), (1806, 17620), (2408, 13215), (2580, 12334), (2643, 12040), (3010, 10572), (3524, 9030), (3612, 8810), (4405, 7224), (4515, 7048), (5160, 6167), (5286, 6020)]