19910060

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1889}}^1$

素因数の和:1946

約数の個数: 48

約数和(自身を含む): 45722880

約数和(自身を除く): 25812820

約数列:

[1, 2, 4, 5, 10, 17, 20, 31, 34, 62, 68, 85, 124, 155, 170, 310, 340, 527, 620, 1054, 1889, 2108, 2635, 3778, 5270, 7556, 9445, 10540, 18890, 32113, 37780, 58559, 64226, 117118, 128452, 160565, 234236, 292795, 321130, 585590, 642260, 995503, 1171180, 1991006, 3982012, 4977515, 9955030, 19910060]

約数ペア:

[(1, 19910060), (2, 9955030), (4, 4977515), (5, 3982012), (10, 1991006), (17, 1171180), (20, 995503), (31, 642260), (34, 585590), (62, 321130), (68, 292795), (85, 234236), (124, 160565), (155, 128452), (170, 117118), (310, 64226), (340, 58559), (527, 37780), (620, 32113), (1054, 18890), (1889, 10540), (2108, 9445), (2635, 7556), (3778, 5270)]