28156240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{367}}^1$

素因数の和:524

約数の個数: 80

約数和(自身を含む): 75566592

約数和(自身を除く): 47410352

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 137, 140, 274, 280, 367, 548, 560, 685, 734, 959, 1096, 1370, 1468, 1835, 1918, 2192, 2569, 2740, 2936, 3670, 3836, 4795, 5138, 5480, 5872, 7340, 7672, 9590, 10276, 10960, 12845, 14680, 15344, 19180, 20552, 25690, 29360, 38360, 41104, 50279, 51380, 76720, 100558, 102760, 201116, 205520, 251395, 351953, 402232, 502790, 703906, 804464, 1005580, 1407812, 1759765, 2011160, 2815624, 3519530, 4022320, 5631248, 7039060, 14078120, 28156240]

約数ペア:

[(1, 28156240), (2, 14078120), (4, 7039060), (5, 5631248), (7, 4022320), (8, 3519530), (10, 2815624), (14, 2011160), (16, 1759765), (20, 1407812), (28, 1005580), (35, 804464), (40, 703906), (56, 502790), (70, 402232), (80, 351953), (112, 251395), (137, 205520), (140, 201116), (274, 102760), (280, 100558), (367, 76720), (548, 51380), (560, 50279), (685, 41104), (734, 38360), (959, 29360), (1096, 25690), (1370, 20552), (1468, 19180), (1835, 15344), (1918, 14680), (2192, 12845), (2569, 10960), (2740, 10276), (2936, 9590), (3670, 7672), (3836, 7340), (4795, 5872), (5138, 5480)]