28278140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{7561}}^1$

素因数の和:7598

約数の個数: 48

約数和(自身を含む): 68602464

約数和(自身を除く): 40324324

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 748, 935, 1870, 3740, 7561, 15122, 30244, 37805, 75610, 83171, 128537, 151220, 166342, 257074, 332684, 415855, 514148, 642685, 831710, 1285370, 1413907, 1663420, 2570740, 2827814, 5655628, 7069535, 14139070, 28278140]

約数ペア:

[(1, 28278140), (2, 14139070), (4, 7069535), (5, 5655628), (10, 2827814), (11, 2570740), (17, 1663420), (20, 1413907), (22, 1285370), (34, 831710), (44, 642685), (55, 514148), (68, 415855), (85, 332684), (110, 257074), (170, 166342), (187, 151220), (220, 128537), (340, 83171), (374, 75610), (748, 37805), (935, 30244), (1870, 15122), (3740, 7561)]