19562985

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:255

約数の個数: 64

約数和(自身を含む): 38223360

約数和(自身を除く): 18660375

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 71, 117, 135, 157, 195, 213, 351, 355, 471, 585, 639, 785, 923, 1065, 1413, 1755, 1917, 2041, 2355, 2769, 3195, 4239, 4615, 6123, 7065, 8307, 9585, 10205, 11147, 13845, 18369, 21195, 24921, 30615, 33441, 41535, 55107, 55735, 91845, 100323, 124605, 144911, 167205, 275535, 300969, 434733, 501615, 724555, 1304199, 1504845, 2173665, 3912597, 6520995, 19562985]

約数ペア:

[(1, 19562985), (3, 6520995), (5, 3912597), (9, 2173665), (13, 1504845), (15, 1304199), (27, 724555), (39, 501615), (45, 434733), (65, 300969), (71, 275535), (117, 167205), (135, 144911), (157, 124605), (195, 100323), (213, 91845), (351, 55735), (355, 55107), (471, 41535), (585, 33441), (639, 30615), (785, 24921), (923, 21195), (1065, 18369), (1413, 13845), (1755, 11147), (1917, 10205), (2041, 9585), (2355, 8307), (2769, 7065), (3195, 6123), (4239, 4615)]