18000640

素因数分解:

$2^8\times 5^1\times 7^3\times {\mathrm{41}}^1$

素因数の和:83

約数の個数: 144

約数和(自身を含む): 51508800

約数和(自身を除く): 33508160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 41, 49, 56, 64, 70, 80, 82, 98, 112, 128, 140, 160, 164, 196, 205, 224, 245, 256, 280, 287, 320, 328, 343, 392, 410, 448, 490, 560, 574, 640, 656, 686, 784, 820, 896, 980, 1120, 1148, 1280, 1312, 1372, 1435, 1568, 1640, 1715, 1792, 1960, 2009, 2240, 2296, 2624, 2744, 2870, 3136, 3280, 3430, 3920, 4018, 4480, 4592, 5248, 5488, 5740, 6272, 6560, 6860, 7840, 8036, 8960, 9184, 10045, 10496, 10976, 11480, 12544, 13120, 13720, 14063, 15680, 16072, 18368, 20090, 21952, 22960, 26240, 27440, 28126, 31360, 32144, 36736, 40180, 43904, 45920, 52480, 54880, 56252, 62720, 64288, 70315, 73472, 80360, 87808, 91840, 109760, 112504, 128576, 140630, 160720, 183680, 219520, 225008, 257152, 281260, 321440, 367360, 439040, 450016, 514304, 562520, 642880, 900032, 1125040, 1285760, 1800064, 2250080, 2571520, 3600128, 4500160, 9000320, 18000640]

約数ペア:

[(1, 18000640), (2, 9000320), (4, 4500160), (5, 3600128), (7, 2571520), (8, 2250080), (10, 1800064), (14, 1285760), (16, 1125040), (20, 900032), (28, 642880), (32, 562520), (35, 514304), (40, 450016), (41, 439040), (49, 367360), (56, 321440), (64, 281260), (70, 257152), (80, 225008), (82, 219520), (98, 183680), (112, 160720), (128, 140630), (140, 128576), (160, 112504), (164, 109760), (196, 91840), (205, 87808), (224, 80360), (245, 73472), (256, 70315), (280, 64288), (287, 62720), (320, 56252), (328, 54880), (343, 52480), (392, 45920), (410, 43904), (448, 40180), (490, 36736), (560, 32144), (574, 31360), (640, 28126), (656, 27440), (686, 26240), (784, 22960), (820, 21952), (896, 20090), (980, 18368), (1120, 16072), (1148, 15680), (1280, 14063), (1312, 13720), (1372, 13120), (1435, 12544), (1568, 11480), (1640, 10976), (1715, 10496), (1792, 10045), (1960, 9184), (2009, 8960), (2240, 8036), (2296, 7840), (2624, 6860), (2744, 6560), (2870, 6272), (3136, 5740), (3280, 5488), (3430, 5248), (3920, 4592), (4018, 4480)]