21229175

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1$

素因数の和:296

約数の個数: 48

約数和(自身を含む): 32140800

約数和(自身を除く): 10911625

約数列:

[1, 5, 11, 17, 19, 25, 55, 85, 95, 187, 209, 239, 275, 323, 425, 475, 935, 1045, 1195, 1615, 2629, 3553, 4063, 4541, 4675, 5225, 5975, 8075, 13145, 17765, 20315, 22705, 44693, 49951, 65725, 77197, 88825, 101575, 113525, 223465, 249755, 385985, 849167, 1117325, 1248775, 1929925, 4245835, 21229175]

約数ペア:

[(1, 21229175), (5, 4245835), (11, 1929925), (17, 1248775), (19, 1117325), (25, 849167), (55, 385985), (85, 249755), (95, 223465), (187, 113525), (209, 101575), (239, 88825), (275, 77197), (323, 65725), (425, 49951), (475, 44693), (935, 22705), (1045, 20315), (1195, 17765), (1615, 13145), (2629, 8075), (3553, 5975), (4063, 5225), (4541, 4675)]