20160640

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^2\times {\mathrm{109}}^1$

素因数の和:162

約数の個数: 96

約数和(自身を含む): 51668100

約数和(自身を除く): 31507460

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 109, 128, 136, 160, 170, 218, 272, 289, 320, 340, 436, 544, 545, 578, 640, 680, 872, 1088, 1090, 1156, 1360, 1445, 1744, 1853, 2176, 2180, 2312, 2720, 2890, 3488, 3706, 4360, 4624, 5440, 5780, 6976, 7412, 8720, 9248, 9265, 10880, 11560, 13952, 14824, 17440, 18496, 18530, 23120, 29648, 31501, 34880, 36992, 37060, 46240, 59296, 63002, 69760, 74120, 92480, 118592, 126004, 148240, 157505, 184960, 237184, 252008, 296480, 315010, 504016, 592960, 630020, 1008032, 1185920, 1260040, 2016064, 2520080, 4032128, 5040160, 10080320, 20160640]

約数ペア:

[(1, 20160640), (2, 10080320), (4, 5040160), (5, 4032128), (8, 2520080), (10, 2016064), (16, 1260040), (17, 1185920), (20, 1008032), (32, 630020), (34, 592960), (40, 504016), (64, 315010), (68, 296480), (80, 252008), (85, 237184), (109, 184960), (128, 157505), (136, 148240), (160, 126004), (170, 118592), (218, 92480), (272, 74120), (289, 69760), (320, 63002), (340, 59296), (436, 46240), (544, 37060), (545, 36992), (578, 34880), (640, 31501), (680, 29648), (872, 23120), (1088, 18530), (1090, 18496), (1156, 17440), (1360, 14824), (1445, 13952), (1744, 11560), (1853, 10880), (2176, 9265), (2180, 9248), (2312, 8720), (2720, 7412), (2890, 6976), (3488, 5780), (3706, 5440), (4360, 4624)]