21377772

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2687}}^1$

素因数の和:2727

約数の個数: 72

約数和(自身を含む): 61641216

約数和(自身を除く): 40263444

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 17, 18, 26, 34, 36, 39, 51, 52, 68, 78, 102, 117, 153, 156, 204, 221, 234, 306, 442, 468, 612, 663, 884, 1326, 1989, 2652, 2687, 3978, 5374, 7956, 8061, 10748, 16122, 24183, 32244, 34931, 45679, 48366, 69862, 91358, 96732, 104793, 137037, 139724, 182716, 209586, 274074, 314379, 411111, 419172, 548148, 593827, 628758, 822222, 1187654, 1257516, 1644444, 1781481, 2375308, 3562962, 5344443, 7125924, 10688886, 21377772]

約数ペア:

[(1, 21377772), (2, 10688886), (3, 7125924), (4, 5344443), (6, 3562962), (9, 2375308), (12, 1781481), (13, 1644444), (17, 1257516), (18, 1187654), (26, 822222), (34, 628758), (36, 593827), (39, 548148), (51, 419172), (52, 411111), (68, 314379), (78, 274074), (102, 209586), (117, 182716), (153, 139724), (156, 137037), (204, 104793), (221, 96732), (234, 91358), (306, 69862), (442, 48366), (468, 45679), (612, 34931), (663, 32244), (884, 24183), (1326, 16122), (1989, 10748), (2652, 8061), (2687, 7956), (3978, 5374)]