28018768

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:164

約数の個数: 80

約数和(自身を含む): 61067520

約数和(自身を除く): 33048752

約数列:

[1, 2, 4, 8, 16, 19, 37, 38, 47, 53, 74, 76, 94, 106, 148, 152, 188, 212, 296, 304, 376, 424, 592, 703, 752, 848, 893, 1007, 1406, 1739, 1786, 1961, 2014, 2491, 2812, 3478, 3572, 3922, 4028, 4982, 5624, 6956, 7144, 7844, 8056, 9964, 11248, 13912, 14288, 15688, 16112, 19928, 27824, 31376, 33041, 37259, 39856, 47329, 66082, 74518, 92167, 94658, 132164, 149036, 184334, 189316, 264328, 298072, 368668, 378632, 528656, 596144, 737336, 757264, 1474672, 1751173, 3502346, 7004692, 14009384, 28018768]

約数ペア:

[(1, 28018768), (2, 14009384), (4, 7004692), (8, 3502346), (16, 1751173), (19, 1474672), (37, 757264), (38, 737336), (47, 596144), (53, 528656), (74, 378632), (76, 368668), (94, 298072), (106, 264328), (148, 189316), (152, 184334), (188, 149036), (212, 132164), (296, 94658), (304, 92167), (376, 74518), (424, 66082), (592, 47329), (703, 39856), (752, 37259), (848, 33041), (893, 31376), (1007, 27824), (1406, 19928), (1739, 16112), (1786, 15688), (1961, 14288), (2014, 13912), (2491, 11248), (2812, 9964), (3478, 8056), (3572, 7844), (3922, 7144), (4028, 6956), (4982, 5624)]