28515480

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{409}}^1$

素因数の和:513

約数の個数: 128

約数和(自身を含む): 99187200

約数和(自身を除く): 70671720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 83, 84, 105, 120, 140, 166, 168, 210, 249, 280, 332, 409, 415, 420, 498, 581, 664, 818, 830, 840, 996, 1162, 1227, 1245, 1636, 1660, 1743, 1992, 2045, 2324, 2454, 2490, 2863, 2905, 3272, 3320, 3486, 4090, 4648, 4908, 4980, 5726, 5810, 6135, 6972, 8180, 8589, 8715, 9816, 9960, 11452, 11620, 12270, 13944, 14315, 16360, 17178, 17430, 22904, 23240, 24540, 28630, 33947, 34356, 34860, 42945, 49080, 57260, 67894, 68712, 69720, 85890, 101841, 114520, 135788, 169735, 171780, 203682, 237629, 271576, 339470, 343560, 407364, 475258, 509205, 678940, 712887, 814728, 950516, 1018410, 1188145, 1357880, 1425774, 1901032, 2036820, 2376290, 2851548, 3564435, 4073640, 4752580, 5703096, 7128870, 9505160, 14257740, 28515480]

約数ペア:

[(1, 28515480), (2, 14257740), (3, 9505160), (4, 7128870), (5, 5703096), (6, 4752580), (7, 4073640), (8, 3564435), (10, 2851548), (12, 2376290), (14, 2036820), (15, 1901032), (20, 1425774), (21, 1357880), (24, 1188145), (28, 1018410), (30, 950516), (35, 814728), (40, 712887), (42, 678940), (56, 509205), (60, 475258), (70, 407364), (83, 343560), (84, 339470), (105, 271576), (120, 237629), (140, 203682), (166, 171780), (168, 169735), (210, 135788), (249, 114520), (280, 101841), (332, 85890), (409, 69720), (415, 68712), (420, 67894), (498, 57260), (581, 49080), (664, 42945), (818, 34860), (830, 34356), (840, 33947), (996, 28630), (1162, 24540), (1227, 23240), (1245, 22904), (1636, 17430), (1660, 17178), (1743, 16360), (1992, 14315), (2045, 13944), (2324, 12270), (2454, 11620), (2490, 11452), (2863, 9960), (2905, 9816), (3272, 8715), (3320, 8589), (3486, 8180), (4090, 6972), (4648, 6135), (4908, 5810), (4980, 5726)]