28515760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3917}}^1$

素因数の和:3950

約数の個数: 80

約数和(自身を含む): 81619776

約数和(自身を除く): 53104016

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 182, 208, 260, 280, 364, 455, 520, 560, 728, 910, 1040, 1456, 1820, 3640, 3917, 7280, 7834, 15668, 19585, 27419, 31336, 39170, 50921, 54838, 62672, 78340, 101842, 109676, 137095, 156680, 203684, 219352, 254605, 274190, 313360, 356447, 407368, 438704, 509210, 548380, 712894, 814736, 1018420, 1096760, 1425788, 1782235, 2036840, 2193520, 2851576, 3564470, 4073680, 5703152, 7128940, 14257880, 28515760]

約数ペア:

[(1, 28515760), (2, 14257880), (4, 7128940), (5, 5703152), (7, 4073680), (8, 3564470), (10, 2851576), (13, 2193520), (14, 2036840), (16, 1782235), (20, 1425788), (26, 1096760), (28, 1018420), (35, 814736), (40, 712894), (52, 548380), (56, 509210), (65, 438704), (70, 407368), (80, 356447), (91, 313360), (104, 274190), (112, 254605), (130, 219352), (140, 203684), (182, 156680), (208, 137095), (260, 109676), (280, 101842), (364, 78340), (455, 62672), (520, 54838), (560, 50921), (728, 39170), (910, 31336), (1040, 27419), (1456, 19585), (1820, 15668), (3640, 7834), (3917, 7280)]