21023388

素因数分解:

$2^2\times 3^5\times {\mathrm{43}}^1\times {\mathrm{503}}^1$

素因数の和:565

約数の個数: 72

約数和(自身を含む): 56504448

約数和(自身を除く): 35481060

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 43, 54, 81, 86, 108, 129, 162, 172, 243, 258, 324, 387, 486, 503, 516, 774, 972, 1006, 1161, 1509, 1548, 2012, 2322, 3018, 3483, 4527, 4644, 6036, 6966, 9054, 10449, 13581, 13932, 18108, 20898, 21629, 27162, 40743, 41796, 43258, 54324, 64887, 81486, 86516, 122229, 129774, 162972, 194661, 244458, 259548, 389322, 488916, 583983, 778644, 1167966, 1751949, 2335932, 3503898, 5255847, 7007796, 10511694, 21023388]

約数ペア:

[(1, 21023388), (2, 10511694), (3, 7007796), (4, 5255847), (6, 3503898), (9, 2335932), (12, 1751949), (18, 1167966), (27, 778644), (36, 583983), (43, 488916), (54, 389322), (81, 259548), (86, 244458), (108, 194661), (129, 162972), (162, 129774), (172, 122229), (243, 86516), (258, 81486), (324, 64887), (387, 54324), (486, 43258), (503, 41796), (516, 40743), (774, 27162), (972, 21629), (1006, 20898), (1161, 18108), (1509, 13932), (1548, 13581), (2012, 10449), (2322, 9054), (3018, 6966), (3483, 6036), (4527, 4644)]