31720640

素因数分解:

$2^6\times 5^1\times 7^3\times {\mathrm{17}}^2$

素因数の和:72

約数の個数: 168

約数和(自身を含む): 93573600

約数和(自身を除く): 61852960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 32, 34, 35, 40, 49, 56, 64, 68, 70, 80, 85, 98, 112, 119, 136, 140, 160, 170, 196, 224, 238, 245, 272, 280, 289, 320, 340, 343, 392, 448, 476, 490, 544, 560, 578, 595, 680, 686, 784, 833, 952, 980, 1088, 1120, 1156, 1190, 1360, 1372, 1445, 1568, 1666, 1715, 1904, 1960, 2023, 2240, 2312, 2380, 2720, 2744, 2890, 3136, 3332, 3430, 3808, 3920, 4046, 4165, 4624, 4760, 5440, 5488, 5780, 5831, 6664, 6860, 7616, 7840, 8092, 8330, 9248, 9520, 10115, 10976, 11560, 11662, 13328, 13720, 14161, 15680, 16184, 16660, 18496, 19040, 20230, 21952, 23120, 23324, 26656, 27440, 28322, 29155, 32368, 33320, 38080, 40460, 46240, 46648, 53312, 54880, 56644, 58310, 64736, 66640, 70805, 80920, 92480, 93296, 99127, 109760, 113288, 116620, 129472, 133280, 141610, 161840, 186592, 198254, 226576, 233240, 266560, 283220, 323680, 373184, 396508, 453152, 466480, 495635, 566440, 647360, 793016, 906304, 932960, 991270, 1132880, 1586032, 1865920, 1982540, 2265760, 3172064, 3965080, 4531520, 6344128, 7930160, 15860320, 31720640]

約数ペア:

[(1, 31720640), (2, 15860320), (4, 7930160), (5, 6344128), (7, 4531520), (8, 3965080), (10, 3172064), (14, 2265760), (16, 1982540), (17, 1865920), (20, 1586032), (28, 1132880), (32, 991270), (34, 932960), (35, 906304), (40, 793016), (49, 647360), (56, 566440), (64, 495635), (68, 466480), (70, 453152), (80, 396508), (85, 373184), (98, 323680), (112, 283220), (119, 266560), (136, 233240), (140, 226576), (160, 198254), (170, 186592), (196, 161840), (224, 141610), (238, 133280), (245, 129472), (272, 116620), (280, 113288), (289, 109760), (320, 99127), (340, 93296), (343, 92480), (392, 80920), (448, 70805), (476, 66640), (490, 64736), (544, 58310), (560, 56644), (578, 54880), (595, 53312), (680, 46648), (686, 46240), (784, 40460), (833, 38080), (952, 33320), (980, 32368), (1088, 29155), (1120, 28322), (1156, 27440), (1190, 26656), (1360, 23324), (1372, 23120), (1445, 21952), (1568, 20230), (1666, 19040), (1715, 18496), (1904, 16660), (1960, 16184), (2023, 15680), (2240, 14161), (2312, 13720), (2380, 13328), (2720, 11662), (2744, 11560), (2890, 10976), (3136, 10115), (3332, 9520), (3430, 9248), (3808, 8330), (3920, 8092), (4046, 7840), (4165, 7616), (4624, 6860), (4760, 6664), (5440, 5831), (5488, 5780)]