21439866

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{401}}^1$

素因数の和:499

約数の個数: 64

約数和(自身を含む): 52485120

約数和(自身を除く): 31045254

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 67, 114, 133, 134, 201, 266, 399, 401, 402, 469, 798, 802, 938, 1203, 1273, 1407, 2406, 2546, 2807, 2814, 3819, 5614, 7619, 7638, 8421, 8911, 15238, 16842, 17822, 22857, 26733, 26867, 45714, 53333, 53466, 53734, 80601, 106666, 159999, 161202, 188069, 319998, 376138, 510473, 564207, 1020946, 1128414, 1531419, 3062838, 3573311, 7146622, 10719933, 21439866]

約数ペア:

[(1, 21439866), (2, 10719933), (3, 7146622), (6, 3573311), (7, 3062838), (14, 1531419), (19, 1128414), (21, 1020946), (38, 564207), (42, 510473), (57, 376138), (67, 319998), (114, 188069), (133, 161202), (134, 159999), (201, 106666), (266, 80601), (399, 53734), (401, 53466), (402, 53333), (469, 45714), (798, 26867), (802, 26733), (938, 22857), (1203, 17822), (1273, 16842), (1407, 15238), (2406, 8911), (2546, 8421), (2807, 7638), (2814, 7619), (3819, 5614)]