28249480

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{29}}^1\times {\mathrm{71}}^1$

素因数の和:132

約数の個数: 128

約数和(自身を含む): 77760000

約数和(自身を除く): 49510520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 49, 56, 58, 70, 71, 98, 116, 140, 142, 145, 196, 203, 232, 245, 280, 284, 290, 343, 355, 392, 406, 490, 497, 568, 580, 686, 710, 812, 980, 994, 1015, 1160, 1372, 1420, 1421, 1624, 1715, 1960, 1988, 2030, 2059, 2485, 2744, 2840, 2842, 3430, 3479, 3976, 4060, 4118, 4970, 5684, 6860, 6958, 7105, 8120, 8236, 9940, 9947, 10295, 11368, 13720, 13916, 14210, 14413, 16472, 17395, 19880, 19894, 20590, 24353, 27832, 28420, 28826, 34790, 39788, 41180, 48706, 49735, 56840, 57652, 69580, 72065, 79576, 82360, 97412, 99470, 100891, 115304, 121765, 139160, 144130, 194824, 198940, 201782, 243530, 288260, 397880, 403564, 487060, 504455, 576520, 706237, 807128, 974120, 1008910, 1412474, 2017820, 2824948, 3531185, 4035640, 5649896, 7062370, 14124740, 28249480]

約数ペア:

[(1, 28249480), (2, 14124740), (4, 7062370), (5, 5649896), (7, 4035640), (8, 3531185), (10, 2824948), (14, 2017820), (20, 1412474), (28, 1008910), (29, 974120), (35, 807128), (40, 706237), (49, 576520), (56, 504455), (58, 487060), (70, 403564), (71, 397880), (98, 288260), (116, 243530), (140, 201782), (142, 198940), (145, 194824), (196, 144130), (203, 139160), (232, 121765), (245, 115304), (280, 100891), (284, 99470), (290, 97412), (343, 82360), (355, 79576), (392, 72065), (406, 69580), (490, 57652), (497, 56840), (568, 49735), (580, 48706), (686, 41180), (710, 39788), (812, 34790), (980, 28826), (994, 28420), (1015, 27832), (1160, 24353), (1372, 20590), (1420, 19894), (1421, 19880), (1624, 17395), (1715, 16472), (1960, 14413), (1988, 14210), (2030, 13916), (2059, 13720), (2485, 11368), (2744, 10295), (2840, 9947), (2842, 9940), (3430, 8236), (3479, 8120), (3976, 7105), (4060, 6958), (4118, 6860), (4970, 5684)]