20974974

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1$

素因数の和:257

約数の個数: 64

約数和(自身を含む): 47692800

約数和(自身を除く): 26717826

約数列:

[1, 2, 3, 6, 17, 19, 34, 38, 51, 57, 79, 102, 114, 137, 158, 237, 274, 323, 411, 474, 646, 822, 969, 1343, 1501, 1938, 2329, 2603, 2686, 3002, 4029, 4503, 4658, 5206, 6987, 7809, 8058, 9006, 10823, 13974, 15618, 21646, 25517, 32469, 44251, 51034, 64938, 76551, 88502, 132753, 153102, 183991, 205637, 265506, 367982, 411274, 551973, 616911, 1103946, 1233822, 3495829, 6991658, 10487487, 20974974]

約数ペア:

[(1, 20974974), (2, 10487487), (3, 6991658), (6, 3495829), (17, 1233822), (19, 1103946), (34, 616911), (38, 551973), (51, 411274), (57, 367982), (79, 265506), (102, 205637), (114, 183991), (137, 153102), (158, 132753), (237, 88502), (274, 76551), (323, 64938), (411, 51034), (474, 44251), (646, 32469), (822, 25517), (969, 21646), (1343, 15618), (1501, 13974), (1938, 10823), (2329, 9006), (2603, 8058), (2686, 7809), (3002, 6987), (4029, 5206), (4503, 4658)]