401433920

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{677}}^1$

素因数の和:820

約数の個数: 112

約数和(自身を含む): 1022939280

約数和(自身を除く): 621505360

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 109, 136, 160, 170, 218, 272, 320, 340, 436, 544, 545, 677, 680, 872, 1088, 1090, 1354, 1360, 1744, 1853, 2180, 2708, 2720, 3385, 3488, 3706, 4360, 5416, 5440, 6770, 6976, 7412, 8720, 9265, 10832, 11509, 13540, 14824, 17440, 18530, 21664, 23018, 27080, 29648, 34880, 37060, 43328, 46036, 54160, 57545, 59296, 73793, 74120, 92072, 108320, 115090, 118592, 147586, 148240, 184144, 216640, 230180, 295172, 296480, 368288, 368965, 460360, 590344, 592960, 736576, 737930, 920720, 1180688, 1254481, 1475860, 1841440, 2361376, 2508962, 2951720, 3682880, 4722752, 5017924, 5903440, 6272405, 10035848, 11806880, 12544810, 20071696, 23613760, 25089620, 40143392, 50179240, 80286784, 100358480, 200716960, 401433920]

約数ペア:

[(1, 401433920), (2, 200716960), (4, 100358480), (5, 80286784), (8, 50179240), (10, 40143392), (16, 25089620), (17, 23613760), (20, 20071696), (32, 12544810), (34, 11806880), (40, 10035848), (64, 6272405), (68, 5903440), (80, 5017924), (85, 4722752), (109, 3682880), (136, 2951720), (160, 2508962), (170, 2361376), (218, 1841440), (272, 1475860), (320, 1254481), (340, 1180688), (436, 920720), (544, 737930), (545, 736576), (677, 592960), (680, 590344), (872, 460360), (1088, 368965), (1090, 368288), (1354, 296480), (1360, 295172), (1744, 230180), (1853, 216640), (2180, 184144), (2708, 148240), (2720, 147586), (3385, 118592), (3488, 115090), (3706, 108320), (4360, 92072), (5416, 74120), (5440, 73793), (6770, 59296), (6976, 57545), (7412, 54160), (8720, 46036), (9265, 43328), (10832, 37060), (11509, 34880), (13540, 29648), (14824, 27080), (17440, 23018), (18530, 21664)]