21138516

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{27961}}^1$

素因数の和:27981

約数の個数: 48

約数和(自身を含む): 62634880

約数和(自身を除く): 41496364

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 189, 252, 378, 756, 27961, 55922, 83883, 111844, 167766, 195727, 251649, 335532, 391454, 503298, 587181, 754947, 782908, 1006596, 1174362, 1509894, 1761543, 2348724, 3019788, 3523086, 5284629, 7046172, 10569258, 21138516]

約数ペア:

[(1, 21138516), (2, 10569258), (3, 7046172), (4, 5284629), (6, 3523086), (7, 3019788), (9, 2348724), (12, 1761543), (14, 1509894), (18, 1174362), (21, 1006596), (27, 782908), (28, 754947), (36, 587181), (42, 503298), (54, 391454), (63, 335532), (84, 251649), (108, 195727), (126, 167766), (189, 111844), (252, 83883), (378, 55922), (756, 27961)]