21401638

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{521}}^1$

素因数の和:612

約数の個数: 32

約数和(自身を含む): 36080640

約数和(自身を除く): 14679002

約数列:

[1, 2, 19, 23, 38, 46, 47, 94, 437, 521, 874, 893, 1042, 1081, 1786, 2162, 9899, 11983, 19798, 20539, 23966, 24487, 41078, 48974, 227677, 455354, 465253, 563201, 930506, 1126402, 10700819, 21401638]

約数ペア:

[(1, 21401638), (2, 10700819), (19, 1126402), (23, 930506), (38, 563201), (46, 465253), (47, 455354), (94, 227677), (437, 48974), (521, 41078), (874, 24487), (893, 23966), (1042, 20539), (1081, 19798), (1786, 11983), (2162, 9899)]