28012140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{11971}}^1$

素因数の和:11999

約数の個数: 72

約数和(自身を含む): 91513968

約数和(自身を除く): 63501828

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 11971, 23942, 35913, 47884, 59855, 71826, 107739, 119710, 143652, 155623, 179565, 215478, 239420, 311246, 359130, 430956, 466869, 538695, 622492, 718260, 778115, 933738, 1077390, 1400607, 1556230, 1867476, 2154780, 2334345, 2801214, 3112460, 4668690, 5602428, 7003035, 9337380, 14006070, 28012140]

約数ペア:

[(1, 28012140), (2, 14006070), (3, 9337380), (4, 7003035), (5, 5602428), (6, 4668690), (9, 3112460), (10, 2801214), (12, 2334345), (13, 2154780), (15, 1867476), (18, 1556230), (20, 1400607), (26, 1077390), (30, 933738), (36, 778115), (39, 718260), (45, 622492), (52, 538695), (60, 466869), (65, 430956), (78, 359130), (90, 311246), (117, 239420), (130, 215478), (156, 179565), (180, 155623), (195, 143652), (234, 119710), (260, 107739), (390, 71826), (468, 59855), (585, 47884), (780, 35913), (1170, 23942), (2340, 11971)]