221965975

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{1721}}^1$

素因数の和:1816

約数の個数: 48

約数和(自身を含む): 348477696

約数和(自身を除く): 126511721

約数列:

[1, 5, 7, 11, 25, 35, 55, 67, 77, 175, 275, 335, 385, 469, 737, 1675, 1721, 1925, 2345, 3685, 5159, 8605, 11725, 12047, 18425, 18931, 25795, 43025, 60235, 94655, 115307, 128975, 132517, 301175, 473275, 576535, 662585, 807149, 1268377, 2882675, 3312925, 4035745, 6341885, 8878639, 20178725, 31709425, 44393195, 221965975]

約数ペア:

[(1, 221965975), (5, 44393195), (7, 31709425), (11, 20178725), (25, 8878639), (35, 6341885), (55, 4035745), (67, 3312925), (77, 2882675), (175, 1268377), (275, 807149), (335, 662585), (385, 576535), (469, 473275), (737, 301175), (1675, 132517), (1721, 128975), (1925, 115307), (2345, 94655), (3685, 60235), (5159, 43025), (8605, 25795), (11725, 18931), (12047, 18425)]