19989780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{431}}^1\times {\mathrm{773}}^1$

素因数の和:1216

約数の個数: 48

約数和(自身を含む): 56173824

約数和(自身を除く): 36184044

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 431, 773, 862, 1293, 1546, 1724, 2155, 2319, 2586, 3092, 3865, 4310, 4638, 5172, 6465, 7730, 8620, 9276, 11595, 12930, 15460, 23190, 25860, 46380, 333163, 666326, 999489, 1332652, 1665815, 1998978, 3331630, 3997956, 4997445, 6663260, 9994890, 19989780]

約数ペア:

[(1, 19989780), (2, 9994890), (3, 6663260), (4, 4997445), (5, 3997956), (6, 3331630), (10, 1998978), (12, 1665815), (15, 1332652), (20, 999489), (30, 666326), (60, 333163), (431, 46380), (773, 25860), (862, 23190), (1293, 15460), (1546, 12930), (1724, 11595), (2155, 9276), (2319, 8620), (2586, 7730), (3092, 6465), (3865, 5172), (4310, 4638)]