8220940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{4517}}^1$

素因数の和:4546

約数の個数: 48

約数和(自身を含む): 21252672

約数和(自身を除く): 13031732

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 4517, 9034, 18068, 22585, 31619, 45170, 58721, 63238, 90340, 117442, 126476, 158095, 234884, 293605, 316190, 411047, 587210, 632380, 822094, 1174420, 1644188, 2055235, 4110470, 8220940]

約数ペア:

[(1, 8220940), (2, 4110470), (4, 2055235), (5, 1644188), (7, 1174420), (10, 822094), (13, 632380), (14, 587210), (20, 411047), (26, 316190), (28, 293605), (35, 234884), (52, 158095), (65, 126476), (70, 117442), (91, 90340), (130, 63238), (140, 58721), (182, 45170), (260, 31619), (364, 22585), (455, 18068), (910, 9034), (1820, 4517)]